Cephalopoda - Ammonitida - Brancoceratidae

Synonyms: Omocyrtoceras Van Hoepen 1955, Tetragonoceras Van Hoepen 1955

Full reference: J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560

Parent taxon: Brancoceratinae according to C. W. Wright et al. 1996

Sister taxa: Brancoceras, Cantabrigites, Hysteroceras, Neokentroceras, Parabrancoceras

Subtaxa: Erioliceras elegans, Erioliceras humilis, Erioliceras tenuis, Omocyrtoceras errabundum, Omocyrtoceras mutabilis, Tetragonoceras robustum

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Type: Erioliceras tenuis

Ecology: fast-moving nektonic carnivore