The American Museum journal (c1900-(1918)) (18155962552)

Teeth of Chriacus (syn. Cricentes)
Title: The American Museum journal
Identifier: americanmuseumjo05amer (find matches)
Year: c1900-(1918) (c190s)
Authors: American Museum of Natural History
Subjects: Natural history
Publisher: New York : American Museum of Natural History
Contributing Library: American Museum of Natural History Library
Digitizing Sponsor: Biodiversity Heritage Library



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28 THE AMERICAN MUSEUM JOURNAL specimens of 48 others (including three complete mounted skeletons), while only 15 species are not represented.
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FIG. 9. UPPER AND LOWER TEETH OF TRICENTES Represents the most primitive type of teeth of the Carnivora, with no specialized carnassials. Natural size OXYCL^NID^. Types: Chriaciis, Tricentes, Deltatherium. Upper and lower jaws. Small primitive animals with unspecialized teeth resembling those of lemurs. Only fragmentary specimens have been found, and but little is known about them. They are the most ancient group of the Creodonts and appear to have been nearest to the central stock from which the other Creodonts and Carnivores are descended. They are found onlv in the Basal Eocene. Arctocyonid^. Types:.4rctocj^on, skull (cast); C/^rnt^x/on, jaws and feet; Anacodon, jaws. Bear-like omnivorous Creodonts with sharp canine teeth and the crowns of the molars flattened and wrinkled on the surface. The animal walked on the entire sole of the foot, and had large sharp claws like the modern bears. As in all these ancient mammals the brain was very small, as can be seen in the skull of Arctocyon. Pal.^onictid^. PalcEonictis, front of skull and jaws. This rare and primitive group of Creodonts is thought by some authors to be the remote ancestor of the Cat family. It is found only in the Lower Eocene.