Cephalopoda - Nautilida - Grypoceratidae

Alternative combination: Grypoceras (Plummeroceras) plummeri

Full reference: B. Kummel. 1953. American Triassic coiled nautiloids. United States Geological Survey Professional Paper 250:1-104

Belongs to Plummeroceras according to C. Teichert et al. 1964

See also Kummel 1953

Sister taxa: none

Type specimen: BEG 7173. Its type locality is B.E.G. 30-T-9 (H-6), Baird, Callahan County, which is in an Artinskian coastal siliciclastic in the Belle Plains Formation of Texas.

Average measurements (in mm): shell diameter 168.0

Distribution: found only at B.E.G. 30-T-9 (H-6), Baird, Callahan County

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Specimen images are retrieved through the ePANDDA API.