Echinoidea - Calycina - Phymosomatidae

Alternative combination: Cyphosoma cribrum

Belongs to Porosoma according to C. D. Wagner 1972

Sister taxa: Porosoma fifei, Porosoma lamberti, Porosoma maeandrinum, Porosoma reesidei, Cyphosoma (Coptosoma) singulare

Distribution: found only at Marne a Briozoi, Valle dell'Onte [Marna di Priabona Fm] - Coleoidea (Eocene of Italy)

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Specimen images are retrieved through the ePANDDA API.