Coconuts are protected from being eaten on their travels by having a hard, thick shell.
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Split loaf horizontally, and scoop out soft bread from both halves, leaving a ½-inch-thick shell.
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It's actually a super-elongated mollusk, one that grows vertically in sediment, excreting a thick shell and poking two siphons out of the muck.
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He came back and presented me with a "Red Prawn": one of the most sought-after durians in the world, with a colorful flesh and a notoriously thick shell.
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Bacteria rely on a form of chemical communication known as quorum-sensing: When they form a critical mass, they start churning out toxins, exchanging genes for antibiotic resistance and protecting themselves with a thick shell of sugar molecules that are impermeable to many drugs.
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Using a geophysical model that depicts a crust 'floating' atop a mantle, Mikael Beuthe of the Royal Observatory of Belgium shows that gravity data collected by Cassini can be explained by a ~100 kilometer (62 mile)-thick shell of ice enveloping a 65 kilometer (40 mile)-deep ocean.
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The nacreous, white shell is somewhat broader (2.45 mm) than high (2.1 mm). The thick shell has a narrow umbilicus.
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The small nut has a thick shell with deep grooves enclosing an oily, edible seed.Heller, Amos Arthur. (1909). Muhlenbergia; a Journal of Botany 1(4): 50.Torrey, John. (1853).
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Ripe fruit of fony baobab can be found October to November. Fruits are rounded with a thick shell (pericarp) with dense reddish-brown hairs. Seeds are kidney-shaped (reniform).
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The thick shell is turreted and shaped like an awl, rissoid, solid, and longitudinally plicate . The aperture is large. The columella is spirally tortuous. The outer lip is thickened within.
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The height of the shell attains 23 mm, its diameter 26 mm. The imperforate, solid, thick shell is subglobose. The short spire is conoid. The shell contains 4 to 5 whorls.
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The solid, thick shell has a globose shape. The spire is very short . The aperture is rounded. The parietal wall bears a heavy callus which wholly or almost covers the narrow umbilicus.
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The size of the shell varies between 45 mm and 105 mm. The imperforate, solid, thick shell has a strictly conical shape. The spire is more or less attenuated above. The apex is acute.
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The length of the shell attains 9 mm, its diameter 3.5 mm. The barely thick shell has an elongate-fusiform shape. It is white with red, fine thread-like lines. The apex is eroded, six whorls remaining.
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The thick shell is broadly ovate or globular and low-spired. It has a smooth surface. The shells are spirally ribbed or show some axial sculpturing. The ventral side has a large columellar callus or parietal wall.
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The height of the shell attains 5.5 mm. The small, very minutely perforate, thick shell has a conoidal shape. It is, ashen reddish. The five whorls are separated by canaliculate sutures, convex, the embryonic ones smooth, the rest roughened.
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The height of the shell attains 35 mm, its diameter 36 mm. The false-unibilicate, solid, thick shell has a conical shape. The spire shows rectilinear or slightly convex outlines. The about 9 whorls are planulate or a little concave.
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The size of the shell attains 9 mm. The rather thick shell is narrowly and profoundly perforate and has a conoid shape. It is dull cinereous, ornamented with castaneous radiating flammules. The six whorls are rather convex and spirally finely lirate.
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The height of the shell attains 9 mm, its diameter 6 mm. The small, imperforate, thick shell has a conoid-elongated shape. It is whitish- ashen, punctate with rose-color, maculate with spadiceous. The 6 to 7 whorls 6 are convex.
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The size of the shell varies between 4 mm and 8 mm. The small, solid and thick shell has a globose conic shape. It is pinkish, or ashen-pink, irregularly dotted or longitudinally striped with dull red. The short spire is acutely conic.
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The husks become dry at maturity and split away from the nut into four valves along sutures. Husks of pignut hickory split only to the middle or slightly beyond and generally cling to the nut, which is unribbed, with a thick shell.
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Some of those adaptations include a thick shell and a relatively reduced apertureLuchtel D. L. & Deyrup-Olsen: Body Wall Form and Function. in Barker G. M. (ed.): The biology of terrestrial molluscs. CABI Publishing, Oxon, UK, 2001, . 1-146, cited pages: 159.
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Griffiths HJ (1978). A Handbook of Veterinary Parasitology: Domestic Animals of North America. University of Minnesota Press, Minneapolis, Minnesota, USA, pp. 46-47. The eggs of these nematodes are characterized by a thick shell, smooth and ellipsoidal, and composed of three distinct layers.
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In RFX, the thick shell was replaced with an active system of 192 coils, which cover the entire torus with their saddle shape, and response to the magnetic push of the plasma. Active control of plasma modes is also possible with this system.
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The length of the shell varies between 10 mm and 20 mm. The thick shell is smooth, narrow, elongated, and subturreted. It is formed of eight or nine slightly distinct roundish whorls. It is of a fawn color or more or less deep brownish red.
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The size of the shell varies between 10 mm and 24 mm. The solid, imperforate, thick shell has a conical shape. It is dull flesh colored and granulate. The 7 - 8 flat, margined whorls are encircled by 8 unequal series of granules, the second largest.
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The height of the shell varies between 45 mm and 70 mm, its diameter between 45 mm and 60 mm. The solid, thick shell has a conic-pyramidal shape. Its, axis is imperforate but appears sub-umbilicate. It is white, longitudinally flammulated with bright red.
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The length of the shell varies between 14 mm and 22 mm. (Original description) The rather thick shell is oblong, pyramidal and pale brownish black. The whorls are smooth, encircled with a single row of granules near the suture, longitudinally ribbed below. The aperture is short.
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The length of the shell varies between 15 mm and 20 mm. The thick shell is smooth, ovate, somewhat gibbous upon the back of the body whorl, flattened and widened upon the sides. The spire is short and acute. It is formed of five or six whorls.
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The size of an adult shell varies between 50 mm and 136 mm. The spire is obsoletely tuberculate or smooth and rather depressed. The thick shell has nodular shoulders of whorls. The body whorl is bordered by a broad shoulder and is spirally ridged at the base.
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The height of the shell attains 19 mm. The solid, thick shell has a globose-conic shape. it is imperforate when adult, umbilicate in the young,. Its color is whitish or yellowish, marked longitudinally with narrow black stripes, or series of black spots on the spirals.
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Z. Kuang) and Lu Anmin (A.M.Lu) in 1979, named after a French botanist Louis-Albert Dode.John M. Grimshaw. The nuts are oval-shaped with bumps and seal-like depressions (sigillatae) in the shell, and with its thick shell the species has been termed the "iron walnut".
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The adult flukes can live up to 20 years. The eggs are golden brown in color and are asymmetrically ovoid. They have a very thick shell. As seen above, these trematodes have a very complex life cycle with seven distinct phases involving intermediate hosts and humans.
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The length of the shell attains 22 mm. (Original description) The rude, rather thick shell is oblong, pyramidal and brownish black. The whorls are keeled near the suture, longitudinally ribbed below. The ribs are numerous and sharp; the ribs of the body whorl flowing down, crossed with lines.
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The size of an adult shell varies between 8 mm and 25 mm. The thick shell is whitish, irregularly variegated with a few large squarish brown spots. The upper portion of the whorls is smooth, concave, below the periphery with numerous narrow ribs. The anal sinus is broad.
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The size of the shell varies between 9 mm and 23 mm. The umbilicate, moderately thick shell has a conoid shape. The five convex whorls are separated by canaliculate sutures. The first whorls are eroded, whitish, the rest roseus, cinereous or brownish, ornamented with a few radiating white streaks.
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The size of the shell varies between 4 mm and 5.5 mm. The small, solid, thick shell has a globose-conic shape, evenly grained all over. it is blackish or pink varied with darker. It is imperforate when adult, and has a groove at the place of the umbilicus.
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The length of an adult shell attains 16.5 mm, its diameter 6.5 mm. It is superficially similar to Benthofascis conorbioides, but it does not resorb the inner whorls. (Original description) The biconic, moderately thick shell has an ovately fusiform shape. Its surface is spirally furrowed, smooth and shining.
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The shell grows to a length of 60 mm. The thick shell is subfusiform. The ground color of the shell is light green, with a reddish tone between the arcuate, opisthocline ribs and with a thick, olive-brown periostracum. The acuminate, orthoconic spire ends abruptly in a large blunt protoconch.
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The height of the shell attains 19 mm, its diameter 21 mm. The thick shell has a very deep umbilicus, nearly reaching to the apex. It is a little shining, yellowish, with elongated flexuous unequal brownish- green spots and dots of the same color. The acute spire is little elevated.
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Pleurobema rubrum, the pyramid pigtoe, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. This species is endemic to the United States. Its habitat is in medium to large rivers in sand or gravel. Specimens are generally long with a chestnut, thick shell.
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The narrow shell aperture, which is ovate and pointed on the top, can be closed with an operculum. The thick shell is oviform to fusiform, with a short (sometimes sunken) conical apex. They have spiral sculpturing. The elongated aperture opens up from narrow at the posterior notch to enlarged at the base.
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The thick shell is long and moderately slender. The shell grows to a length of 7.5 mm. It is opaque white, tinted with yellow at the sutures and has considerable lustre. The larger type specimen has 10 flattened whorls on the teleoconch, having a slight bulge just above the well marked suture.
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Purpura persica (Lovell Augustus Reeve, 1843. Conchologia iconica) The shell size of Purpura persica varies between 60 mm and 110 mm. It is a large and thick shell, with large body whorl and a very expanded aperture. The surface shows a chocolate-brown color and it is sculptured with spiralled, beaded cords.
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The thick shell of species in the genus Conus sensu stricto, is obconic, with the whorls enrolled upon themselves. The spire is short, smooth or tuberculated. The narrow aperture is elongated with parallel margins and is truncated at the base. The operculum is very small relative to the size of the shell.
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The size of the shell varies between 15 mm and 40 mm. The thick shell is ovate, oblong and cylindrical. It shows slightly impressed, transverse striae, traversed by oblong, brown spots, and often intermixed with other reddish spots, especially upon the whorls. A narrow, white band, surrounds towards the middle, the lowest woirl.
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The size of an adult shell varies between 35 mm and 75 mm. The thick shell is small with a low spire. It has five rows of small granules at anterior end of whorl. It is dark brown or red in color with a mottled cream banding around the shoulders and across the body whorl.
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The length of the shell attains 43 mm. (Original description) The large, thick shell is dull brownish yellow, with a very acute, elevated spire. It contains nine whorls, very oblique, moderately convex, concave below the suture. The whole surface is covered with close lines of growth, which recede in a broad curve on the subsutural band.
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The color of the thick shell is yellowish white or pale orange, with close narrow, wavy, thread-like longitudinal chestnut striations, interrupted by a chocolate, fairly narrow, revolving band above the middle. The base is stained chocolate, bordered upwards by progressively lighter bands. The aperture is banded, chocolate and white.George Washington Tryon, Manual of Conchology vol.
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The thick shell is opaque The shell grows to a length of 6.7 mm. The teleoconch contains seven flat whorls with a deep suture. The body whorl has 15 revolving lines, the upper ones more distant, about four lines on the next whorl, the number of lines diminishing on the upper whorls. The columellar tooth is distinct.
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This clam had a thick shell paved with "prisms" of calcite deposited perpendicular to the surface, giving it a pearly luster in life. Paleontologists suggest that its giant size was an adaptation for life in the murky bottom waters, where a correspondingly large gill area would have allowed the animal to cope with oxygen-depleted waters .
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Flowers open at dusk, are finished blooming by dawn and are pollinated by long-tongued hawkmoths. Fruits ripen by November. They have a tough, thick shell, are rounded and usually less than long; smaller than most other baobab species. The trees are often found along watercourses and the thick-shelled fruit are likely dispersed by water.
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The height of the shell varies between 20 mm and 40 mm. The imperforate, solid, rather thick shell has an elongated-conical shape. It is polished and shining. The color of the shell is brown, fawn-color or rosy, with widely spaced light or dark narrow spiral lines, usually four in number on the penultimate whorl.
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The thick shell is ovate, conical, shining and smooth. Its ground color is whitish, ornamented with numerous undulated and reddish longitudinal lines. The spire composed of eight or nine convex whorls. The upper ones are plaited, and the others marked at their upper part with white and brown spots or blotches, alternately disposed, and surrounding the suture.
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The length of the shell varies between 14 mm and 17 mm. The small, pretty thick shell is elongated and conical. It is formed of six distinct, slightly convex whorls. The surface of the upper whorls appears to be shagreened by very small tubercles, formed by a multitude of very approximate longitudinal folds and transverse striae.
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Male D. renale worms have a bursa, which is used to attach to facilitate mating. Eggs are 60-80 micrometres x 39-47 micrometres, contain an embryo, and have characteristic sculpturing of the shell. They have an oval-shape and brownish-yellow hue. Eggs have a thick shell, and the surface appears to be pitted except at the poles.
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They are often associated with a related genus in the order Cladocera: Moina, which is in the Moinidae family instead of Daphniidae and is much smaller than D. pulex (approximately half the maximum length). Daphnia eggs for sale are generally enclosed in ephippia (a thick shell, consisting of two chitinous plates, that encloses and protects the winter eggs of a cladoceran).
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The height of the shell varies between 20 mm and 26 mm, its diameter measures 25 mm. The solid, thick shell has a conical shape carinated with nearly straight sides and is false-umbilicate. This species is more strictly conical than usual in Clanculus. It has a reddish or yellowish-brown color, more or less dotted minutely with a slightly darker shade.
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Species of the genus Limopsis are among the few suspension feeding deep-sea bivalves, and are absent from the continental shelf. They are relatively small, byssate (i.e. attached to the sea floor by strong threads, or byssus), and, while the viscera are reduced, there is a comparatively thick shell. Differences between species are usually defined by minor differences in gill and palp structure.
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Head Shell-crest and plain-head are found in all colors of Frillbacks. A plain-headed Frillback should have a slightly oval head with no flat areas and a forehead that has a distinct stop at the wattle. A shell- crested Frillback should have a thick shell crest on the back of the head with rosettes on each side. The crest should stand off the head.
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Inside, the hull was divided into eight watertight compartments protected by a continuous double bottom. The ice belt consisted of thick shell plating and transverse frames every . The main and auxiliary engine rooms were located amidships below the main deck with the propulsion motors in their own watertight compartments. The remaining space was taken up by tanks for fuel and lubricating oil, fresh water and ballast.
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The size of the shell varies between 10 mm and 60 mm. The large, solid but not thick shell has a rounded-oval shape and is much depressed. The distance of the apex measures from the margin one- fifth the length of the shell. The shell is sculptured with fine spiral cords cut by close minute striae of increment, and has radiating waves or folds above.
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The lion's paw can be 6.4 - 15.2 cm (2.5–6 in) long and are nearly circular. It has a moderately thick shell with flattened anterior wings near the hinge. In fact, the shell of the animal is very bright and is known for its thick and knobby texture. Their colors can range from red to orange; however, some appear purple and even yellow in hue.
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The length of the shell attains 15mm, its width 9mm The thick shell is ovate and inflated. Its ground color is white, covered with transverse striae and longitudinal waving reddish lines, often divided into three portions in their length. The conoid spire is canaliculated, composed of six whorls, the upper ones very approximate, the lowest much larger than all the others. The oblong aperture is widened, dilated at its base.
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The shell size varies between 30 mm and 52 mm The thick shell is ovate and conical. It is composed of eight convex and subcarinated whorls. The whole surface ornamented with small tubercles formed like rounded papillae, eight transverse rows of which appear upon the body whorl, four upon the second, and three only upon those of the spire. They gradually diminish in size towards the summit, which is generally of a rose color.
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The size of an adult shell varies between 40 mm and 110 mm. The color of the thick shell is yellowish white or cream, with numerous interrupted revolving lines and spots of dark brown and two irregular and wider light brown bands. In the synonym Conus fuscatus, the light brown coloring extends in clouds and irregular markings over the surface, so that the bands can scarcely be defined.George Washington Tryon, Manual of Conchology, vol.
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The relatively thick shell forms between 10 and 16% of the weight of a penguin egg, presumably to reduce the effects of dehydration and to minimize the risk of breakage in an adverse nesting environment. The yolk, too, is large, and comprises 22–31% of the egg. Some yolk often remains when a chick is born, and is thought to help sustain the chick if the parents are delayed in returning with food.Williams, p.
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It is likely that Tenticospirifer, that itself appeared during early Givetian, includes the ancestor of Cyrtospirifer. Cyrtospirifer first occurs in western Europe in the Late Givetian. Tenticospirifer has a relatively narrow hingeline and an inflated and thick shell in common with two of the oldest species known, C. verneuiliformis and C. aperturatus. This group dominated during the late Givetian, but was replaced by other species, such as C. syringothyriformis and C. verneuili which have wide hingelines and thinner shells.
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The size of the shell varies between 40 mm and 90 mm. The somewhat thick shell is ovate and inflated. It has a whitish ground color, varied and spotted with square spots, of a yellow more or less reddish, alternating upon the transverse ribs, with other spots of a dull white. The short spire is composed of six convex whorls, slightly flattened above, banded with ribs equally convex, wide, not distant, and divided by narrow, shallow furrows.
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During much of the distance the water descends in two streams, with small islands in the middle. The water has a high content of calcium carbonate and other minerals, and where it falls on rocks or fallen trees, it encases them in a thick shell-like coating of limestone. Local residents reportedly restored the waterfalls after the 2017 Chiapas earthquake has created a crack and led to a temporary reduction of the water flow over the falls.
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Inoceramids had a thick shell paved with "prisms" of calcite deposited perpendicular to the surface, which gave it a pearly luster in life. Most species have prominent growth lines which appear as raised semicircles concentric to the growing edge of the shell. Paleontologists suggest that the giant size of some species was an adaptation for life in the murky bottom waters, with a correspondingly large gill area that would have allowed the animal to survive in oxygen-deficient waters.
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The thick shell and rounded shape of bivalves make them awkward for potential predators to tackle. Nevertheless, a number of different creatures include them in their diet. Many species of demersal fish feed on them including the common carp (Cyprinus carpio), which is being used in the upper Mississippi River to try to control the invasive zebra mussel (Dreissena polymorpha). Birds such as the Eurasian oystercatcher (Haematopus ostralegus) have specially adapted beaks which can pry open their shells.
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The height of the shell attains 18 mm. (Original description) The rather thick shell has a fusiform shape and is yellowish-white. The upper whorls are lost by erosion. Of the remaining 6 whorls the upper ones are still eroded, of the 4 whorls which are in sufficient state of preservation, the upper 2 are slightly angular, their upper part a little excavated, the lower part more convex, with a single row of nodules on the limit.
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Pigs and wild boars ingest the infective embryo while grazing. The digestive enzymes will break the thick shell of the egg and allow formation of the zygotes called "oncospheres". These oncospheres then penetrate the mucous layer of the digestive tract and enter the circulation of the host. This is where the young larval stages form a pea-sized, fluid filled cyst, also known as “cysticercus”, which migrate to visceral organs like liver, serosa and lungs in pigs, and liver in cattle.
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The cones open to broad when mature, holding the seeds on the scales after opening. The seeds are long, with a thick shell, a white endosperm, and a vestigial wing; they are dispersed by the Mexican jay, which plucks the seeds out of the open cones. The jay, which uses the seeds as a major food resource, stores many of the seeds for later use; some of these stored seeds are not used and are able to grow into new trees.
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The eggs are either white or pale yellow in their initial stages and gradually change to a speckled purple within a few days of fertilisation. They have flat base and apex with a moderately thick shell, consisting of 14 to 18 rib-like striations. The laid eggs, however, remain dormant during the hot Australian summers. The larvae begin to develop within the eggs only if the autumn showers wet the eggs, the temperature falls, or the number of daylight hours decreases.
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The shell of T. gallina is typically high and wide, though it may be slightly higher than wide. The imperforate, heavy, solid, thick shell has a conoidal shape and is elevated. Its colors show alternating whitish and purplish-grey or blackish crowded, slanting axial stripes, speckled with whitish. The stripes occupy the interstices between close, narrow superficial folds of the surface, which may be well-marked, or obsolete, continuous or cut into granules by equally close spiral furrows, the latter sometimes predominating.
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Since no skeletal remains were associated with its remains, the parentage of Parvoblongoolithus is unknown. However, its microstructure suggests it was laid by some kind of non-avian dinosaur, related to the parents of Stalicoolithidae, Paraspheroolithus, or Mosaicoolithus. Parvoblongoolithus is remarkable for having an extremely thick shell (as thick as the shell of titanosaur eggs) despite being significantly smaller than its close relatives. This would have made it much more difficult for a baby dinosaur to break out of the egg without parental assistance.
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After a main-sequence star has exhausted its core hydrogen, it begins to fuse hydrogen in a thick shell around a core consisting largely of helium. The mass of the helium core is below the Schönberg–Chandrasekhar limit and is in thermal equilibrium, and the star is a subgiant. Any additional energy production from the shell fusion is consumed in inflating the envelope and the star cools but does not increase in luminosity. Shell hydrogen fusion continues in stars of roughly solar mass until the helium core increases in mass sufficiently that it becomes degenerate.
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The cones open to 4–6 cm broad when mature, holding the seeds on the scales after opening. The seeds are 9–12 mm long, with a thick shell, a white endosperm, and a vestigial 1–2 mm wing; they are dispersed by the Clark's nutcracker and Mexican jay, which pluck the seeds out of the open cones. The jays, which uses the seeds as a major food resource, store many of the seeds for later use, and some of these stored seeds are not used and are able to grow into new plants.
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Museum specimen The pretty thick shell is ovate-globose and ventricose. The pointed spire is formed of six whorls, the upper of which are slightly convex, but little developed, having three or four transverse striae, very apparent, and spotted with brown blotches. The body whorl is very much inflated, completely surrounded by from fifteen to twenty equal ribs, depressed, but slightly rounded. These ribs are separated from each other by a shallow furrow, which becomes wider between the first two or three upper ribs, by the disappearance of the intermediate ribs.
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For this reason, and because of the type of sediment found accompanying their fossils, it is suggested that they lived in shallow waters and not in deep oceans. Their diet consisted of marine bivalves, brachiopods, and other invertebrates. They were notable for their large, flat, often protruding teeth, which they used to crush the molluscs and brachiopods that they hunted on the sea bed (another way in which they were similar to walruses). The palate teeth were adapted for this durophagous diet, being extremely thick and large enough to crush thick shell.
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The southern giant clam is one of the largest of the "giant clams", reaching up to 60 cm in length.CITES: Twenty-second Meeting of the Animals Committee , Lima (Peru), 7–13 July 2006 (January 2007). The species is also known as the smooth giant clam because of the relative lack of ribbing and scales on its thick shell. The smoothness of the southern giant clam's shell and its six to seven vertical folds help to distinguish it from its larger relative, Tridacna gigas, which has four to five folds and a rougher texture.
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The cones open to broad when mature. The seeds are long, with a thick shell, with a vestigial wing; the seedlings have 18–24 cotyledons, the highest number reported for any plant. Because of its isolation in a remote area, it escaped discovery until 1964, when the Mexican botanist Jerzy Rzedowski noticed some unusually large pine nuts (piñones) sold in the markets of local villages, and investigated the area to find their source. It differs from all other pinyon species in that it has very massive cones and large seeds.
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This process is sometimes referred to as a "cloacal kiss".The sperm is then transferred into the female, much like the mating process in birds.. Along with birds, the tuatara is one of the only members of amniota to have lost the ancestral penis. Tuatara juvenile (Sphenodon punctatus) Tuatara eggs have a soft, parchment-like 0.2 mm thick shell that consists of calcite crystals embedded in a matrix of fibrous layers. It takes the females between one and three years to provide eggs with yolk, and up to seven months to form the shell.
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Overall, the publication felt that the build quality was good. GamesIndustry also described the controls as considerably more comfortable than that of its predecessors. It also noted that the console had thick shell rather than the thin Nintendo 3DS, and that the lack of a hinge added durability. The publication felt that the design resembled "an unholy union of a Game Boy, the Wii U GamePad, and a DS." USA Today and CNET both had some concern over how to protect the screens, since there is no clamshell to close.
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Thick shell is cylindrically turbinated, somewhat inflared, and varies in length between 25 mm and 90 mm. The spire is of varying height (mostly short), and with distant, spiral ridges on the lower half of the body whorl. The whole surface is distantly encircled by granular striae. The colouration is variable: often creamy orange, variously painted with chestnut longitudinal irregular streaks, usually forming three broad series or bands, zigzagging lines on upper part of body whorl and spire, and with brown bands across central and lower half of body whorl; or pale orange with white shoulder mottling and a central band.
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The cones open to to broad when mature, holding the seeds on the scales after opening. The seeds are to long, with a thick shell, a pink endosperm, and a vestigial wing; they are dispersed by the Mexican jay, which plucks the seeds out of the open cones. The jay, which uses the seeds as a major food resource, stores many of the seeds for later use, and some of these stored seeds are not used and are able to grow into new trees. Abert's squirrel also feeds on the seeds in preference to those of the ponderosa pine.
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The length of the shell varies between 6 mm and 6.5 mm, its diameter between 2.25 mm and 2.5 mm. The oblong, quite thick shell has a fusiform shape. The bright white shell is adorned on the upper whorls with two beautiful yellow bands: the first one is lighter, located a little below the suture, the second is darker and wider at the bottom of the whorls, disappearing under the lower suture. In the body whorl, a third band, more extended, is located a little below the top of the aperture, separated from the second by an interval of two decurrent cords.
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Different populations display different strategies or combinations of strategies, and may therefore, be considered separate species or subspecies in the future. In females, the eleventh pair of legs is modified into egg sacs, where the eggs are carried for several hours. The eggs are released in batches, have a thick shell, and can stand freezing temperatures as well as drought, enabling the population to survive from one season to the next. The eggs have to dry out completely before being submerged in water again in order to hatch successfully; they may remain in a state of diapause for up to 20 years.
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H–R diagram for globular cluster M5, showing a short but densely-populated subgiant branch of stars slightly less massive than the Sun Stars less massive than the Sun have non-convective cores with a strong temperature gradient from the centre outwards. When they exhaust hydrogen at the centre of the star, a thick shell of hydrogen outside the central core continues to fuse without interruption. The star is considered to be a subgiant at this point although there is little change visible from the exterior. The helium core mass is below the Schönberg–Chandrasekhar limit and it remains in thermal equilibrium with the fusing hydrogen shell.
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During his time at the State Engineering Corporation, from 1967 to 1968, he was in charge of the country's first digital computer installation and he computerised the design of civil engineering structures, including the Kalutara Cetiya (Kalutara Degoba), a thick shell design that is the world's only hollow Buddhist shrine. He was responsible for the computerisation of the GCE Ordinary-Level and Advanced- Level examination processing in 1968, with over 350,000 candidates. As the head of the Department of Electrical Engineering, he spearheaded the establishment of the Department of Computer Engineering. He then became the dean of the Faculty of Engineering, and later the vice-chancellor of the University of Moratuwa.
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Pumpkins at the French Market, New Orleans A pumpkin is a cultivar of winter squash that is round with smooth, slightly ribbed skin, and is most often deep yellow to orange in coloration. The thick shell contains the seeds and pulp. The name is most commonly used for cultivars of Cucurbita pepo, but some cultivars of Cucurbita maxima, C. argyrosperma, and C. moschata with similar appearance are also sometimes called "pumpkin". Native to North America (northeastern Mexico and the southern United States), pumpkins are one of the oldest domesticated plants, having been used as early as 7,500 to 5,000 BC. Pumpkins are widely grown for commercial use and as food, aesthetics, and recreational purposes.
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Holbrook's North American Herpetology, 1842 The alligator snapping turtle is characterized by a large, heavy head, and a long, thick shell with three dorsal ridges of large scales (osteoderms), giving it a primitive appearance reminiscent of some of the plated dinosaurs, most notably Ankylosaurus. It can be immediately distinguished from the common snapping turtle by the three distinct rows of spikes and raised plates on the carapace, whereas the common snapping turtle has a smoother carapace. M. temminckii is a solid gray, brown, black, or olive-green in color, and often covered with algae. It has radiating yellow patterns around the eyes, serving to break up the outline of the eyes to keep the turtle camouflaged.
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The male flowers are in drooping catkins 9–40 cm long, the wind-pollinated female flowers (April–May) are terminal, in spikes of 4 to 10, ripening in August–October into nuts, 3-7.5 × 3–5 cm, with densely glandular pubescent green husk and very thick shell. The tree is exceptionally hardy (down to at least -45 °C), has a relatively short vegetation period compared to other walnuts, grows rapidly and is cultivated as an ornamental in colder temperate regions all over the Northern Hemisphere. (For example, it has been found to grow satisfactorily in Edmonton, Alberta, Canada.) The kernels of the nuts are edible, but small and difficult to extract. The timber is in use, but less valuable than that of English walnut or black walnut.
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The cones are globose to ovoid, 4–7 cm long and 3–5 cm broad when closed, green at first, ripening yellow-brown when 16–18 months old, with only a small number of thin scales, typically 6-18 fertile scales. The cones open to 5–7 cm broad when mature, holding the seeds on the scales after opening. The seeds are 12–15 mm long, with a thick shell, a pink endosperm, and a vestigial 2 mm wing; they are dispersed by the Mexican jay, which plucks the seeds out of the open cones. The jay, which uses the seeds as a major food resource, stores many of the seeds for later use, and some of these stored seeds are not used and are able to grow into new trees.
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It is known that the abundance of prey, the lack of competition from other gastropod species, as well as the absence of direct predators of R. venosa may be some of the factors that contributed to the successful establishment of new populations of this sea snail outside its native range. The thick strong shell of the rapa whelk is arguably its strongest advantage over native whelks, because rapas can easily prey on local whelks, whereas local whelks are unable to successfully attack rapas. The thick shell also means that predators such as sea turtles are unable to feed on the invasive species, and can only feed on local whelk populations. It is suggested that once the rapa whelk reaches adulthood, it exists unchecked in the local population, and can consume and reproduce freely.
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