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Mammal tooth. An adult cheetah showing its long, sharp canine teeth. Teeth are common to most vertebrates, but mammalian teeth are distinctive in having a variety of shapes and functions. This feature first arose among early therapsids during the Permian, and has continued to the present day. All therapsid groups with the exception of the ...
Triconodon ("three-coned tooth") is a genus of extinct mammal from the Early Cretaceous of England and France with two known species: T. mordax and T. averianovi.First described in 1859 by Richard Owen, [1] it is the type genus for the order Triconodonta, a group of mammals characterised by their three-cusped (triconodont) molar teeth.
Dinosaur tooth. Dinosaur teeth have been studied since 1822 when Mary Ann Mantell (1795-1869) and her husband Dr Gideon Algernon Mantell (1790-1852) discovered an Iguanodon tooth in Sussex in England. Unlike mammal teeth, individual dinosaur teeth are generally not considered by paleontologists to be diagnostic to the genus or species level for ...
Morganucodon ("Glamorgan tooth") is an early mammaliaform genus that lived from the Late Triassic to the Middle Jurassic.It first appeared about 205 million years ago. Unlike many other early mammaliaforms, Morganucodon is well represented by abundant and well preserved (though in the vast majority of cases disarticulated) material.
The species was thought to have lived 6.1 to 5.7 million years ago. Fossil remains have provided very important information regarding dental morphology. Orrorin had smaller teeth relative to body size and the enamel was thicker. [5] The upper canines contain a mesial groove which differs from both Australopithecus and Ardipithecus. [5]
Mesodma is an extinct genus of mammal, a member of the extinct order Multituberculata within the suborder Cimolodonta, family Neoplagiaulacidae. It lived during the upper Cretaceous and Paleocene Periods of what is now North America. The earliest definitive record is from the late Santonian stage strata of the Straight Cliffs Formation. [1]
The animal’s fossil records date back 225 million years, predating the previously confirmed first mammal by approximately 20 million years. Earliest known mammal identified using fossil tooth ...
Teratodontidae. Teratodontinae ("monstrous teeth") is a subfamily of extinct hyaenodonts. Fossil remains of these mammals are known from Middle Eocene to Late Miocene deposits in Africa, the Arabian Peninsula, and Asia.
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