Kammerer, Christian F.Sidor, Christian A.2015-01-092015-01-092002None0078-85540078-8554http://hdl.handle.net/10539/16356Main articleOur knowledge of premammalian synapsid evolutionary history has benefited from over a hundred years of fossil collecting, especially within the Permo-Triassic sediments of South Africa's Beaufort Group (Rubidge 1995) and the Cis-Ural region of Eastern Europe (Ivachnenko et al. 1997). In the course of our research and discussions we have discovered several errors in the present state of non-mammalian synapsid taxonomy. Here we propose emendations concerning the genera Criocephalus Broom 1928 and Olivieria Brink 1965.entherapsid; Criocephalus; OlivieriaArticle