Mammalia - Artiodactyla - Protoceratidae
Alternative combination: Prosynthetoceras hessei
Full reference: R. A. Stirton. 1967. Relationships of the protoceratid artiodactyls, and description of a new genus. University of California Publications in Geological Sciences 72:1-43
Belongs to Lambdoceras according to L. B. Albright 1999
See also Patton 1969, Patton and Taylor 1971, Patton and Taylor 1973, Prothero 1998 and Tedford et al. 1987
Sister taxa: Lambdoceras siouxensis, Lambdoceras trinitiensis
Type specimen: UCMP 32372, an other (maxillary rostral horn). Its type locality is Flint Hill North, which is in a Hemingfordian terrestrial horizon in the Batesland Formation of South Dakota.
Distribution: found only at Flint Hill North
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.