Gymnentome (Craginia) pizcuetai var. carinata
[Revision of the gastropods belonging to the family Cassiopidae Kollmann (=Glauconiidae Ptchelintsev).] Travaux du Departement de Geologie de l'Universite de Picardie, 1 1984: 1-189. 62 [Zoological Record Volume 134]