Cephalopoda - Ammonitida - Acanthoceratidae

Full reference: W. J. Kennedy and W. A. Cobban. 1990. Cenomanian micromorphic ammonites from the western interior of the USA. Palaeontology 33:379-422

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

See also Kennedy and Cobban 1990

Sister taxa: Acanthoceras, Acompsoceras, Alzadites, Benueites, Calycoceras, Conlinoceras, Cunningtoniceras, Eucalycoceras, Kennediella, Kunnamiceras, Microsulcatoceras, Nebraskites, Neocardioceras, Nigericeras, Paraconlinoceras, Plesiacanthoceratoides, Prohauericeras, Protacanthoceras, Pseudocalycoceras, Pseudovascoceras, Quitmaniceras, Tarrantoceras, Thomelites, Watinoceras

Subtaxa: Kastanoceras spinigerum

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Type: Kastanoceras spiniger

Ecology: fast-moving nektonic carnivore

Distribution: found only at USGS Mesozoic 22871, Alzada (Cretaceous of Montana)

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Specimen images are retrieved through the ePANDDA API.