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Thecodont dentition is a morphological arrangement in which the base of the tooth is completely enclosed in a deep socket of bone, as seen in crocodilians, dinosaurs and mammals, and opposed to acrodont and pleurodont dentition seen in squamate reptiles. [1] Notably, this appears to be the ancestral tooth condition in Amniota. [2]
Thecodontia (meaning 'socket-teeth'), now considered an obsolete taxonomic grouping, was formerly used to describe a diverse "order" of early archosaurian reptiles that first appeared in the latest Permian period and flourished until the end of the Triassic period. All of them were built somewhat like crocodiles but with shorter skulls, more ...
This feature is responsible for the name "thecodont" (meaning "socket teeth"), [8] which early paleontologists applied to many Triassic archosaurs. [7] Additionally, non-muscular cheek and lip tissue appear in various forms throughout the clade, with all living archosaurs lacking non-muscular lips, unlike most non-avian saurischian dinosaurs. [ 9 ]
The teeth sit outside of the mouth, interlocking, with two large lower fangs that curl upward reaching past the fish’s eyes. Because its jaw can unhinge, the viperfish can eat large prey for its ...
Dinosaur teeth have been studied since 1822 when Mary Ann Mantell (1795-1869) and her husband Dr Gideon Algernon Mantell (1790-1852) ...
The lack of spoken words in a silent review, which requires an audience to infer whether a reviewer likes a product or not, may seem silly. However, the same kind of nonverbal communication occurs ...
Visitors walk past the 'Super Micro' both at the Computex Taipei exhibition, one of the world's largest IT expos, in Taipei, Taiwan, Tuesday, June 5, 2018.
Acrodonty (from Greek akros 'highest' [1] + odont-'tooth') is an anatomical placement of the teeth at the summit of the alveolar ridge of the jaw, without sockets, [2] characteristic of bony fish. Functionally, acrodont tooth implantation may be related to greater bite force. [ 3 ]
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