Bivalvia - Trigoniida - Trigoniidae
Alternative combination: Lyrioschizodus orbicularis
Full reference: N. D. Newell and D.W. Boyd. 1975. Parallel evolution in early trigonacean bivalves. Bulletin of the American Museum of Natural History 154(2):55-162
Belongs to Lyroschizodus according to S. A. Quiroz-Barroso et al. 2012
See also Kues 2004 and Newell and Boyd 1975
Sister taxa: Lyroschizodus djemelensis, Lyroschizodus oklahomensis, Lyroschizodus praecox, Lyroschizodus subelegans, Lyroschizodus tobai
Type specimen: USNM 177161, a valve (Left valve). Its type locality is USNM726r, Hess Canyon, Glass Mountains, which is in a Roadian carbonate limestone in the Word Formation of Texas.
Distribution:
• Permian of Mexico (1 collection), United States (5: Texas)
• Carboniferous of United States (1: New Mexico)
Total: 7 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.