Cephalopoda - Ammonitida - Acanthoceratidae
Alternative combination: Cunningtoniceras amphibolum
Synonyms: Acanthoceras alvaradoense Moreman 1942, Acanthoceras hazzardi Stephenson 1952, Euomphaloceras alvaradoense Moreman 1942
Belongs to Acanthoceras according to W. J. Kennedy 2020
See also Cobban 1987, Hook and Cobban 2007, Kennedy et al. 1988, Stephenson 1955 and Zaborski 1985
Sister taxa: Acanthoceras (Alternacanthoceras), Acanthoceras asiatica, Acanthoceras athabascense, Acanthoceras basseae, Acanthoceras bellense, Acanthoceras chasca, Acanthoceras compitalis, Acanthoceras compressum, Acanthoceras flexuosum, Acanthoceras granerosense, Acanthoceras joserita, Acanthoceras jukesbrownei, Acanthoceras muldoonense, Acanthoceras pollocense, Acanthoceras rhotomagense, Acanthoceras robustum, Acanthoceras sangalense, Acanthoceras sarthacense, Acanthoceras sherborni, Acanthoceras vectense, Acanthoceras whitei
Subtaxa: Cunningtoniceras amphibolum fallense
Average measurements (in mm): shell diameter 118.2
Distribution:
• Cretaceous of Egypt (2 collections), Nigeria (1), United States (19: New Mexico, South Dakota, Texas, Wyoming)
Total: 22 collections including 24 occurrences
Specimen images are retrieved through the ePANDDA API.
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