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Knoxosaurus
''Knoxosaurus'' is an extinct genus of non-mammalian synapsid containing the species ''Knoxosaurus niteckii''. 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. 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. ==See also==
* List of synapsids
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