Tornoceras cf. uniangulare Name: Tornoceras cf. uniangulare (sutured internal cast) Size: 1 1/2" diameter Time Period: Middle Devonian Formation: Upper Mahantango Member: Presumed Pre-Niss Hollow Siltstone Location: Monroe County, Pennsylvania Above specimen collected by Richard D. L. Fulton late-1980s This specimen was previously identified as Agoniatites, and was re-identified by Dr. Kaplan, Department of Geology, University of Michigan, as a Tornocerid. Return to Cephalopod Workshop Main Page