Taxonomic validity of Petalodus ohioensis (Chondrichthyes, Petalodontidae) based on a cast of the lost holotype

  • Kenneth Carpenter Prehistoric Museum, Utah State University Eastern
  • Wayne M. Itano Museum of Natural History, University of Colorado, Boulder
Keywords: Missourian, Conemaugh Formation, James Safford, Cambridge Limestone, Upper Pennsylvanian, Getalodus, Louis Agassiz, Sicarius extinctus

Abstract

Only a crude line drawing of the holotype tooth of the shark Petalodus ohioensis Safford, 1853 has ever been published, and the location of that specimen has long been unknown. The discovery of a cast of the holotype in the collections of the Yale Peabody Museum of Natural History demonstrates that P. alleghaniensis Leidy, 1856, is a junior subjective synonym of P. ohioensis, thus resolving a long-standing dispute.

Two views of a cast of the long-lost holotype of Petalodus ohioensis Safford, 1853 and hypothetic restoration of the shark. The cast resolves the long historical debate about the validity of this ancient shark tooth species.
Published
2019-02-13
How to Cite
Carpenter, K., and Itano, W., 2019, Taxonomic validity of Petalodus ohioensis (Chondrichthyes, Petalodontidae) based on a cast of the lost holotype: Geology of the Intermountain West, v. 6, p. 55-60.