Rhynchonellata - Orthida - Plaesiomyidae
Alternative combinations: Dinorthis (Plaesiomys) subquadrata, Orthis subquadrata, Plaesiomys subquadrata
Belongs to Plaesiomys according to D. F. Wright and A. L. Stigall 2013
See also Alikhova 1953, Hall and Clarke 1892, Howe 1966, Jin et al. 1997, Jin and Zhan 2008 and Schuchert and Cooper 1932
Sister taxa: Dinorthis (Plaesiomys) saxbyana, Dinorthis (Plaesiomys) solaris, Plaesiomys (Plaesiomys), Plaesiomys (Valcourea), Plaesiomys anticostiensis, Plaesiomys bellilamellosus, Plaesiomys bellistriatus, Plaesiomys carletona, Plaesiomys cutterensis, Plaesiomys fidelis, Plaesiomys idahoensis, Plaesiomys iphigenia, Plaesiomys multiplicata, Plaesiomys occidentalis, Plaesiomys porcata, Plaesiomys proavita, Plaesiomys rockymontana, Plaesiomys saxbiana, Plaesiomys subcircularis
Distribution:
• Ordovician of Canada (4: British Columbia, Manitoba collections), United States (96: Illinois, Iowa, Indiana, Iowa, Kentucky, Michigan, Minnesota, New Mexico, Ohio, Oklahoma, Tennessee, Texas)
Total: 100 collections including 101 occurrences
Specimen images are retrieved through the ePANDDA API.
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