Labidosaurus, COPE, 1896

Modesto, Sean P., Scott, Diane M., Berman, David S., Müller, Johannes & Reisz, Robert R., 2007, The skull and the palaeoecological significance of Labidosaurus hamatus, a captorhinid reptile from the Lower Permian of Texas, Zoological Journal of the Linnean Society 149 (2), pp. 237-262 : 238

LABIDOSAURUS COPE, 1896

Type species: L. hamatus ( Cope, 1895) .

Diagnosis: Same as for L. hamatus , the only valid species.

Comment: Case (1911) erected Labidosaurus broilii for a specimen described by Broili (1904) and reposited in the Alte Akademie, Munich, and differentiated it from the type species on the basis of the subequal size of the first two premaxillary teeth. Seltin (1959) dem- onstrated that there is considerable variation in the relative size of these teeth in C. aguti , and concluded that L. broilii was an ‘indeterminate’ species, which we have interpreted to mean it is a junior synonym of L. hamatus . Seltin (1959) erected Labidosaurus oklahomensis for a small single-tooth-rowed captorhinid specimen from the McCann Quarry, Oklahoma, but this taxon is now recognized as a junior synonym of Captorhinus laticeps ( Heaton, 1979: fig. 4).