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Protorothyris : ウィキペディア英語版 | Protorothyris
''Protorothyris'' is an extinct genus of Early Permian protorothyridid known from Texas and West Virginia of the United States. It was first named by Llewellyn Ivor Price in 1937 and the type species is ''Protorothyris archeri''. ''P. archeri'' is known from the holotype MCZ 1532, a three-dimensionally preserved skull and from the referred specimens, which come from four additional individuals, MCZ 2147-2150. All specimens were collected in the Cottonwood Creek site, from the Archer City Formation, Texas, dating to the Asselian stage of the Cisuralian epoch, about 299-294.6 million years ago. A second species, ''P. morani'', was first named by Alfred Sherwood Romer in 1952 with its own generic name, ''Melanothyris''. In 1973, J. Clark and Robert L. Carroll recombined ''P. morani'' as a ''Protorothyris'' species. It is known from the holotype CM 8617, a three-dimensionally preserved skull. It was collected in the Blacksville site, from the Washington Formation (Asselian stage) of West Virginia. ''Protorothyris'' was the size of a lizard, about 30 cm in length.〔Sumida, S. S. and Martin, K. L. M. (1997). ''Amniote Origins: Completing the Transition to Land''. Academic Press. 510 pp.〕 ==References==
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