Bivalvia - Cardiida - Ungulinidae
Alternative combination: Diplodonta stephensoni
Full reference: B. L. Clark. 1918. The San Lorenzo series of Middle California. a stratigraphic and paleontologic study of the San Lorenzo Oligocene series of the general region of Mount Diablo, California. University of California Publications Bulletin of the Department of Geology 11(2):45-234
Belongs to Diplodonta (Diplodonta) according to E. J. Moore 1988
See also Clark and Arnold 1923
Sister taxa: Diplodonta (Diplodonta) adangmarum, Diplodonta (Diplodonta) alta, Diplodonta (Diplodonta) buwaldana, Diplodonta (Diplodonta) collina, Diplodonta (Diplodonta) cretacea, Diplodonta (Diplodonta) eburnea, Diplodonta (Diplodonta) homalostriata, Diplodonta (Diplodonta) minor, Diplodonta (Diplodonta) nigeriensis, Diplodonta (Diplodonta) polita, Diplodonta (Diplodonta) rotundata, Diplodonta (Diplodonta) ungulina, Diplodonta (Diplodonta) unisulcatus, Diplodonta (Diplodonta) woodringi
Type specimen: UCMP 11171. Its type locality is UCMP loc. 1131, Walnut Creek, which is in an Oligocene marine horizon in California.
Distribution:
• Oligocene of Canada (1: British Columbia collection), United States (1: California)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.