Gastropoda - Euomphalina - Helicotomidae

Alternative combination: Oriostoma bromidensis

Full reference: D. M. Rohr and R. A. Johns. 1990. First occurence of Oriostoma (Gastropoda) from the Middle Ordovician. Journal of Paleontology 64(5):732-735

Belongs to Ophiletina according to P. J. Wagner 2023

See also Rohr and Johns 1990 and Wagner 1999

Sister taxa: Ophiletina angularis, Ophiletina fausta, Ophiletina shokoriense, Ophiletina sublaxa

Type specimen: USNM 446830, a shell. Its type locality is Strip quarry ~20 m west of road to Buckhorn Ranch house, ~25 km S. of Sulfur, which is in a Blackriveran offshore shale/limestone in the Bromide Formation of Oklahoma.

Ecology: stationary epifaunal suspension feeder

Distribution: found only at Strip quarry ~20 m west of road to Buckhorn Ranch house, ~25 km S. of Sulfur

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Specimen images are retrieved through the ePANDDA API.