Category:Paleozoic cephalopods

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Here is a list of articles in the category Paleozoic cephalopods of the Biology portal. Template:Geological category see also

Notable fossil cephalopods (listed by first occurrence)

The belemnite-cuttlefish-like Belosaepia

Marcellus Cephalopod 1896-Dana-ManGeol-Fig917.png

Evolution of
cephalopods

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

First appearance of long-lasting lineages Goniatite and ceratite ammonoids Probable coleoid ancestor Bactritida Earliest belemnoids: Aulacocerids: Aulacoceras Phragmoteuthids: Phragmoteuthis
Early forms the earliest cephalopod group Ellesmerocerida Orthocones: Endocerida, Orthocerida, Actinocerida Brevicones: Ascocerida, Oncocerida Earliest coiled cephalopods: Tarphycerida Spirulid?: Shimanskya
Octopus Pohlsepia

Earliest unambiguous cephalopods: Plectronocerida
- Plectronoceras
Monoplacophoran-like ancestral forms: Knightoconus
Possible, nude, "stem-group cephalopods": Nectocarididae

Pages in category "Paleozoic cephalopods"

The following 11 pages are in this category, out of 11 total.

A

Ammonoidea (biology)

B

Bactritida (biology)
Belemnoidea (biology)

N

Nautilida (biology)
Nautiloid (biology)
Nautiloidea (biology)

O

Orthoceratoidea (biology)
Orthocerida (biology)

P

Palcephalopoda (biology)
Pseudorthocerida (biology)

S

Spyroceratidae (biology)

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