Cephalopoda - Ammonitida - Perisphinctidae
Full reference: O.F. Geyer. 1961. Monographie der Perisphinctidae des unteren Unterkimeridgium (Weißer. Jura Y, Badenerschichten) im süddeutschen Jura. Palaeontographica Abt. A 117(1-4):1-157
Parent taxon: Rasenia according to M. S. Mesezhnikov 1984
See also Dąbrowska 1984 and Geyer 1961
Sister taxa: Rasenia (Rasenia), Rasenia (Rasenioides), Rasenia (Semirasenia), Rasenia borealis, Rasenia cymodoce
Subtaxa: Rasenia (Eurasenia) engeli Rasenia (Eurasenia) frischlini Rasenia (Eurasenia) gothica Rasenia (Eurasenia) pseudouralensis Rasenia (Eurasenia) rolandi Rasenia (Eurasenia) trimera Rasenia (Eurasenia) triplicata
Type: Ammonites rolandi
Ecology: fast-moving nektonic carnivore
Distribution:
• Jurassic of Germany (1 collection), Poland (1), the Russian Federation (7)
Total: 9 collections including 11 occurrences