Cephalopoda - Basslerocerida

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

Sister taxa: Apsidoceratidae, Barrandoceratidae, Lechritrochoceratidae, Plectoceratidae, Uranoceratidae

Subtaxa: Baeopleuroceras, Endoplanoceras, Heracloceras, Lyrioceras, Nephriticeras, Nephriticerina, Rhadinoceras, Sphyradoceras, Triplooceras

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Type: Nephriticeras

Ecology: fast-moving nektobenthic carnivore