Category:Mesozoic cephalopods

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Notable fossil cephalopods (listed by first occurrence)

The belemnite-cuttlefish-like Belosaepia

File:Marcellus Cephalopod 1896-Dana-ManGeol-Fig917.png

Evolution of
cephalopods

Advanced nautiloids Nautilaceae True ammonites
Early coleoids Muensterelloidea Proteroctopus Styletoctopus Keuppia Palaeoctopus Paleocirroteuthis Vampyronassa
Ceratitid ammonoids late Nautilida
Advanced belemnoids Diplobelids: Diplobelus Belemnites: Belemnites Belemnopsis Belemnotheutis

Earliest unambiguous cephalopods: Plectronocerida: Plectronoceras, Monoplacophora-like form: Knightoconus? First appearance of long-lasting lineages Goniatite and ceratite ammonoids Probable coleoid ancestor Bactritida Early coleoids: Jeletzkya?, Gordoniconus, Syllipsimopodi Earliest belemnoids: Aulacocerids Phragmoteuthids
Early forms the earliest cephalopod group Ellesmerocerida Orthocones: Endocerida, Orthocerida, Actinocerida Brevicones: Ascocerida, Oncocerida Earliest coiled cephalopods: Tarphycerida Spirulid?: Shimanskya

Misidentified

Probable misidentified genera: Nectocarididae: (Nectocaris, Nectocotis); Kirengellida; Volborthella; Shelbyoceras; Pohlsepia

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