Cephalopoda - Ceratitida - Galfettitidae

Full reference: A. Brayard and H. Bucher. 2008. Smithian (Early Triassic) ammonoid faunas from northwestern Guangxi (South China): taxonomy and biochronology. Fossils and Strata 55:1-179

Parent taxon: Galfettitidae according to T. Brühwiler and H. Bucher 2012

Sister taxa: Galfettites, Lepiskites, Lingyunites, Paranorites, Radioceras, Safraites, Shigetaceras, Vercherites

Subtaxa: Urdyceras insolitus, Urdyceras tulongensis

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Type: Urdyceras insolitus

Ecology: nektonic carnivore