Rhynchonellata - Rhynchonellida - Petasmariidae

Alternative combination: Pugnax nitida

Full reference: G. H. Girty. 1909. The Guadalupian fauna. United States Geological Survey Professional Paper 58:1-651

Belongs to Bryorhynchus according to G. A. Cooper and R. E. Grant 1976

Sister taxa: Bryorhynchus bisulcatum, Bryorhynchus gratiosum, Bryorhynchus plicatum

Type specimen: USNM 118563

Ecology: stationary epifaunal suspension feeder

Distribution: found only at USGS 2920 green, El Capitan, Guadalupe Mountains (Permian of Texas)

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Specimen images are retrieved through the ePANDDA API.