Composita subquadrata Hall 1858

Rhynchonellata - Athyridida - Athyrididae

Alternative combination: Athyris subquadrata

Belongs to Composita according to Gordon 1975

Sister taxa: Athyris (Composita) indosinensis, Athyris (Composita) semirostrata, Composita advena, Composita affinis, Composita apheles, Composita apsidata, Composita bamberi, Composita biforma, Composita bucculenta, Composita costata, Composita cracens, Composita crassa, Composita depressa, Composita discina, Composita elongata, Composita emarginata, Composita enormis, Composita girtyi, Composita grandis, Composita hapsida, Composita huagongensis, Composita idahoensis, Composita imbricata, Composita insulcata, Composita jogensis, Composita magnicarina, Composita mexicana, Composita minuscula, Composita mira, Composita misriensis, Composita nucella, Composita ovata, Composita parasulcata, Composita pilula, Composita plana, Composita prospera, Composita pyriformis, Composita quadrirotunda, Composita quantilla, Composita rotunda, Composita sigma, Composita stalagmium, Composita strongyle, Composita subcircularis, Composita subtilita, Composita tareica, Composita tetralobata, Composita tobaensis, Composita trinuclea

Distribution:

• Desmoinesian of United States (1: Nevada collection)

• Atokan of United States (2: Nevada)

• Chesterian of Canada (2: Alberta, Northwest Territories), United States (8: Alabama, Indiana, Nevada, Wyoming)

• Carboniferous of Canada (2: Alberta, British Columbia), the Russian Federation (1), United States (20: Idaho, Indiana, Kentucky, Virginia)

Total: 36 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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