Lyroschizodus orbicularis Newell and Boyd 1975 (clam)

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.

Ecology: facultatively mobile infaunal suspension feeder


• Permian of Mexico (1 collection), United States (5: Texas)

• Virgilian of United States (1: New Mexico)

Total: 7 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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