词条 | Palaeoteuthomorpha |
释义 |
| fossil_range = Devonian - ? | taxon = Palaeoteuthomorpha | authority = Bandel, Reitner,& Sturmer, 1983 }} 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
2 : Coleoids|Protostome superorders |
随便看 |
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