Cephalopoda - Nautilida - Grypoceratidae

Alternative spelling: Grypoceras (Plummeroceras)

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

Parent taxon: Grypoceratidae according to C. Teichert et al. 1964

See also Kummel 1953, Pérez-Valera et al. 2017 and Sepkoski 2002

Sister taxa: Domatoceratinae, Epidomatoceras, Grypoceras, Gryponautilus, Gyronautilinae, Menuthionautilus, Neostenopoceras, Paradomatoceras, Parastenopoceras, Pselioceras, Pseudotitanoceras, Stearoceras, Titanoceras, Virgaloceras, Xiaohenautilus

Subtaxa: Plummeroceras plummeri

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Type: Grypoceras (Plummeroceras) plummeri

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

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Specimen images are retrieved through the ePANDDA API.