Condrathyris perplexa McChesney 1859 (lamp shell)

Rhynchonellata - Spiriferida - Elythidae

Alternative combinations: Phricodothyris perplexa, Spirifer perplexa, Squamularia perplexa

Full reference: A. M. McChesney. 1859. Descriptions of new species of fossils from the Paleozoic rocks of the western states. Transactions of the Chicago Academy of Sciences 1:1-76

Belongs to Condrathyris according to R. D. Hoare 1961

See also Dunbar and Condra 1932, Girty 1915, McChesney 1859, Morningstar 1922 and Shimer and Shrock 1944

Sister taxa: Phricodothyris asiatica, Phricodothyris bachuensis, Phricodothyris bella, Phricodothyris catatona, Phricodothyris dispar, Phricodothyris echinata, Phricodothyris guadalupensis, Phricodothyris guizhouensis, Phricodothyris indenta, Phricodothyris kawaiensis, Phricodothyris longlinensis, Phricodothyris nummulina, Phricodothyris occidentalis, Phricodothyris pyriformis, Phricodothyris reticulariformis, Phricodothyris septata, Phricodothyris sibirica, Phricodothyris subrostrata, Phricodothyris tieliensis, Phricodothyris toriyamai, Phricodothyris uzunbulakensis, Phricodothyris xikouensis, Neophricadothyris transversa, Neophricadothyris crassibecca, Squamularia (Neophricodothyris) bilotensis, Squamularia (Neophricodothyris) spatulata, Neophricadothyris conara, Squamularia (Neophricodothyris) baralensis, Squamularia (Neophricodothyris) frechi, Squamularia (Neophricodothyris) oviformis, Squamularia (Neophricodothyris) attenuata

Ecology: stationary epifaunal suspension feeder


• Permian of United States (10: Alaska, Texas collections)

• Virgilian of United States (15: Illinois, New Mexico, Texas)

• Desmoinesian of United States (66: Kansas, Missouri, New Mexico, Pennsylvania)

• Carboniferous of United States (15: Alaska, New Mexico, New mexico, Texas, Utah)

• Mississippian of United States (2: Alaska)

Total: 108 collections including 109 occurrences

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