thecodont teeth

thecodont teeth
teeth rooted in a cavity, a rare condition in fishes, e.g. in Pristiophoridae and Pristidae

Dictionary of ichthyology. 2009.

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  • Thecodont — ( socket toothed reptile), now considered an obsolete term, was formerly used to describe a diverse range of early archosaurs that first appeared in the Latest Permian and flourished until the end of the Triassic period. The group includes the… …   Wikipedia

  • Thecodont — The co*dont, a. [Gr. ? a case + ?, ?, a tooth.] 1. (Anat.) Having the teeth inserted in sockets in the alveoli of the jaws. [1913 Webster] 2. (Paleon.) Of or pertaining to the thecodonts. [1913 Webster] …   The Collaborative International Dictionary of English

  • thecodont — I. adjective Etymology: International Scientific Vocabulary thec (from New Latin theca) + odont Date: 1840 having the teeth inserted in sockets II. noun Date: 1840 any of an order (Thecodontia) of Triassic diapsid thecodont reptiles that were… …   New Collegiate Dictionary

  • thecodont — /thee keuh dont /, n. 1. any of various reptiles of the extinct order Thecodontia, occurring in the late Permian to late Triassic periods and characterized by teeth set in sockets. adj. 2. having the teeth set in sockets. 3. belonging to or… …   Universalium

  • thecodont — Having the teeth inserted in alveoli. [G. theke, box, + odous (odont ), tooth] * * * the·co·dont (theґko dont) [theca + Gr. odous tooth] having the teeth inserted in sockets or alveoli …   Medical dictionary

  • thecodont — [ θi:kə(ʊ)dɒnt] noun Palaeontology a Triassic fossil reptile of a group ancestral to dinosaurs and other archosaurs. Origin C19: from mod. L. Thecodontia, from Gk thēkē case + odous, odont tooth (because the teeth were fixed in sockets in the… …   English new terms dictionary

  • bird — birdless, adj. /berrd/, n. 1. any warm blooded vertebrate of the class Aves, having a body covered with feathers, forelimbs modified into wings, scaly legs, a beak, and no teeth, and bearing young in a hard shelled egg. 2. a fowl or game bird. 3 …   Universalium

  • Bird — /berrd/, n. Larry, born 1956, U.S. basketball player. * * * I Any of the warm blooded, beaked vertebrates of the class Aves, including more than 9,600 living species. A covering of feathers distinguishes birds from all other animals. Birds have a …   Universalium

  • Origin of birds — For the book by Gerhard Heilmann, see The Origin of Birds (book). The famous Berlin specimen of Archaeopteryx lithographica The origin of birds is a contentious and central topic within evolutionary biology. A close relationship between birds and …   Wikipedia

  • reptile — reptilelike, adj. reptiloid /rep tl oyd /, adj. /rep til, tuyl/, n. 1. any cold blooded vertebrate of the class Reptilia, comprising the turtles, snakes, lizards, crocodilians, amphisbaenians, tuatara, and various extinct members including the… …   Universalium

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