Fig. 5
From: The gladiuses in coleoid cephalopods: homology, parallelism, or convergence?
3-d reconstructions of various gladius types and a sepiid cuttlebone. a–e Fossil; f–i Recent; a Plesioteuthis prisca (Tithonian; Prototeuthina); b Rachiteuthis donovani (Cenomanian, Teudopseina); c Palaeololigo oblonga (Tithonian, Teudopseina); d Parabelopeltis flexuosa (Toarcian, Loligosepiina); e Trachyteuthis nusplingensis (Kimmeridgian, Teudopseina); f Ommastrephes (Oegopsida) sp.; g Chtenopteryx (Bathyteuthoidea); h Vampyroteuthis infernalis (Vampyromorpha); i Sepia sp. (Sepiida). Dorsal aspects (except g)