Cephalopoda - Ammonitida - Polymorphitidae

Alternative combination: Ammonites spoliatus

Synonym: Deroceras perisphinctoides Fucini 1903

Belongs to Jamesonites according to M. Rakús and J. Guex 2002

Sister taxon: Jamesonites gumbrechti

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell diameter 54.4

Distribution: found only at Djebel Zaghouan, Mines of Djebel Staa, bed 4 (upper) (Jurassic of Tunisia)

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Specimen images are retrieved through the ePANDDA API.