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tooth-shell

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1
tooth-shell
ˈtooth-shell The long tubular shell, in shape like a tooth or tusk, of any gastropod mollusc of Dentalium or other allied genus; also the mollusc itself. b. false tooth-shell, the similar shell (or animal) of the molluscous genus Cæca, or the family Cæcidæ. c. ‘In Australia, the shell of Marinula pe... Oxford English Dictionary
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Tooth
Manatee Manatees are polyphyodont with mandibular molars developing separately from the jaw and are encased in a bony shell separated by soft tissue. Predatory marine snails such as the Naticidae use the radula plus an acidic secretion to bore through the shell of other molluscs. wikipedia.org
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Sericogyra
The shell has no basal, posterior of anterolateral sinuses. There is no columellar sinus or columellar tooth. The aperture is circular. The shell contains granular microsculpture. Radula: the rachidian tooth is broader than high and has lateral wings prominent. wikipedia.org
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Egg tooth
When a chick is ready to hatch from its egg, it begins the process of "pipping"; forcing the egg tooth through the shell repeatedly as the embryo rotates The egg tooth is used to tear open the inner membrane; the baby crocodile can then push its way through the outer shell. wikipedia.org
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Tegula rugosa
The solid, heavy shell is narrowly umbilicate and has a conoidal shape. The columella is strongly dentate in the middle or below it, with a second small tooth at the base. wikipedia.org
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Tsukumo Shell Mound
Most of the 2400 known shell middens are found along the Pacific coast of Japan. It was also found that many skulls exhibited ritual tooth extraction of the front incisors. wikipedia.org
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海蝶螺属
Main diagnostic features include: the shell and keel are calcareous; larval shell becomes the spire in the adult shell. The radula is typically taenioglossate with one central (rachidian) tooth, with on each side one lateral tooth and two marginal teeth. wikipedia.org
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Ketyconus
Subgenus Ketyconus da Motta, 1991 Shell characters (living and fossil species) The shell is turgid in shape with subangulate shoulders. Radular tooth (not known for fossil species) The anterior section of the radular tooth is substantially longer than the posterior section, and the blade wikipedia.org
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刺螺属
型态描述 The imperforate shell is wheel-shaped. It is low-conic and granulose above, convex below. The central tooth of the radula has no cusps. 分布 本属物种分布于西太平洋包括东南亚的菲律宾、印支半岛、马来半岛、巴布亚新畿内亚，印度洋东部，以及大洋洲澳大利亚的北领地和昆士兰州（位于西太平洋）、及西澳州（位于印度洋东部）各地对出的海洋。 wikipedia.org
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Ray Shell
Shell is also the author of the novels Carolina Red and An Eye, A Tooth. Ray Shell has 3 Grandchildren, Tyler McCurdy, Elle Skatch and Eden Ayries Thomas-Shell. wikipedia.org
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齿舌
（资料来源：http://shell.sinica.edu.tw/ ） 齿式 齿舌上的齿片的排列方式在中文也叫「齿式」，但学名称为「Radula formulae」而不是「Dental formulae」，因为这些只是齿片而不是真正的牙齿。 齿式上所包含的每列齿片的资讯计有： 中央齿（central tooth或rachis tooth）：一般为「R」（有中央齿）或「0」（没有中央齿）。 侧齿（lateral teeth）：中央齿两侧齿片的数量。 wikipedia.org
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Guttula
The columellar tooth is absent. There is no umbilical septum. The shell has punctate microsculpture. Radula: the rachidian tooth is broader than high and has the lateral wings prominent. The lateral tooth cusp is broad to absent. wikipedia.org
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Ascobulla
beyond the shell), even when extended; the head and foot of the snail may be completely withdrawn back into the shell, and the shell then may be contracted This tooth is well-adapted for piercing and suckling. wikipedia.org
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Mammal tooth
Manatees Manatees are polyphyodonts with mandibular molars developing separately from the jaw and are encased in a bony shell separated by soft tissue. The rest of the tooth will slowly emerge from the jaw, erupting about 1/8" each year, as the horse ages. wikipedia.org
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Pharus legumen
The right valve has a single cardinal tooth and a short peg-like posterior lateral tooth, whereas the left valve has two elongated and closely spaced cardinal teeth and a single posterior lateral tooth. wikipedia.org
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