Kingdom Animalia Class Cephalopoda Rank Superorder | Phylum Mollusca Subclass Coleoidea | |
Palaeoteuthomorpha is a superorder of primitive coleoid cephalopods, containing the Boletzkyida, characterized by an orthoceroid-like phragmocone early in ontogeny and a teuthid living chamber later in ontogeny. This contrasts with the later Teuthida which have a reduced living chamber (gladius) throughout.
References
Palaeoteuthomorpha Wikipedia(Text) CC BY-SA