Chondrichthyes - Selachii - Carchariidae

Alternative combinations: Carcharias laevissimus, Galeocerdo laevissimus

Full reference: E. D. Cope. 1868. An addition to the vertebrate fauna of the Miocene period, with a synopsis of the extinct Cetacea of the United States. Proceedings of the Academy of Natural Sciences of Philadelphia 19(4):138-157

Belongs to Sphyrna according to M. Leriche 1942

Sister taxa: Sphyrna americana, Sphyrna denticulata, Sphyrna gilmorei, Sphyrna lata, Sphyrna lewini, Sphyrna magna, Sphyrna media, Sphyrna prisca, Sphyrna zygaena

Type specimen: Its type locality is James T. Thomas estate, which is in a Langhian marine horizon in the Calvert Formation of Maryland.