Cephalopoda - Ammonitida - Tetragonitidae
Parent taxon: Gaudryceras according to W. J. Kennedy et al. 2024
See also Cooper 1978, Kennedy 1994, Kennedy 1995, Kennedy et al. 2007, Matsumoto 1959 and Wright et al. 1996
Sister taxa: Gaudryceras (Mesogaudryceras), Gaudryceras aenigma, Gaudryceras beantalyense, Gaudryceras crassicostatum, Gaudryceras hamanakense, Gaudryceras hobetsense, Gaudryceras izumiense, Gaudryceras kayei, Gaudryceras makarovense, Gaudryceras mamiyai, Gaudryceras mite, Gaudryceras numidum, Gaudryceras propemite, Gaudryceras seymouriense, Gaudryceras stefaninii, Gaudryceras striatum, Gaudryceras tenuiliratum, Gaudryceras tombetsense, Gaudryceras varagurense, Lytoceras (Gaudryceras) alamedense, Lytoceras (Gaudryceras) delvallense, Lytoceras (Gaudryceras) neptunium, Lytoceras (Gaudryceras) texanum, Vertebrites murdochi, Gaudryceras (Neogaudryceras) pictum
Subtaxa: Gaudryceras (Gaudryceras) cassisianum Gaudryceras (Gaudryceras) denmanense Gaudryceras (Gaudryceras) denseplicatum Gaudryceras (Gaudryceras) isovokyense Gaudryceras (Gaudryceras) strictum Gaudryceras (Gaudryceras) varicostatum
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of Angola (1 collection), Antarctica (5), France (10), Greenland (2), Japan (26), Nigeria (1), the Russian Federation (2), South Africa (5), United States (12: Alaska, California, Washington)
Total: 64 collections including 66 occurrences