Cephalopoda - Ammonitida - Polyptychitidae
Alternative combination: Olcostephanus (Polyptychites) gravesiformis
Belongs to Polyptychites (Euryptychites) according to P. Alsen 2006
Sister taxa: Euryptychites (Euryptychites), Polyptychites (Euryptychites) copiocostatus, Polyptychites (Euryptychites) diplotomus, Polyptychites (Euryptychites) laevis, Polyptychites (Euryptychites) latissimus, Polyptychites (Euryptychites) molsbergensis, Polyptychites (Euryptychites) pateraeformis, Polyptychites (Euryptychites) roemeri, Polyptychites (Euryptychites) rubricosus, Polyptychites (Euryptychites) subcoronatus, Polyptychites (Euryptychites) traillensis, Paratollia kemperi
Ecology: fast-moving nektonic carnivore
Distribution: found only at Polyptychites ramulicosta (Cretaceous of Svalbard and Jan Mayen)
Specimen images are retrieved through the ePANDDA API.
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