Cephalopoda - Ammonitida - Acanthoceratidae
Alternative spelling: Tarrantoceras (Sumitomoceras)
Parent taxon: Acanthoceratinae according to W. J. Kennedy and W. A. Cobban 1990
See also Cobban 1988 and Cooper 1978
Sister taxa: Acanthoceras, Acompsoceras, Alzadites, Benueites, Calycoceras, Conlinoceras, Cunningtoniceras, Eucalycoceras, Kastanoceras, Kennediella, Kunnamiceras, Microsulcatoceras, Nebraskites, Neocardioceras, Nigericeras, Paraconlinoceras, Plesiacanthoceratoides, Prohauericeras, Protacanthoceras, Pseudocalycoceras, Pseudovascoceras, Quitmaniceras, Tarrantoceras, Thomelites, Watinoceras
Subtaxa: Sumitomoceras bentonianum Sumitomoceras conlini
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of United States (12: Arizona, Colorado, Montana, New Mexico, Texas collections)
Total: 12 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.