Knoxosaurus
Knoxosaurus |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Synapsida |
Family: | incertae sedis |
Genus: | †Knoxosaurus Olson, 1962 |
Type species | |
<templatestyles src="Noitalic/styles.css"/>†Knoxosaurus niteckii Olson, 1962
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Knoxosaurus is an extinct genus of non-mammalian synapsid containing the species Knoxosaurus niteckii that existed approximately 279.5 to 268 million years ago.[1] It was named by American paleontologist Everett C. Olson in 1962 on the basis of fragmentary fossils from Middle Permian-age deposits in the San Angelo Formation of Texas in the United States.[2] Olson placed Knoxosaurus in a new infraorder called Eotheriodontia, which he considered a transitional group between the more reptile-like "pelycosaurs" and the more mammal-like therapsids. Knoxosaurus and Olson's other eotheriodonts were later considered to be undiagnostic remains of basal synapsids, no more closely related to therapsids than are other pelycosaur-grade synapsids.[3]
See also
References
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