Adkinsia

Adkinsia Temporal range: Cenomanian^[1] PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Genus:	Adkinsia

Adkinsia is an extinct genus of cephalopod belonging to the Ammonite subclass.

References

↑ Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.

Notable fossil cephalopods (listed by first occurrence)

Cenozoic

Mesozoic

Advanced nautiloids Nautilaceae True ammonites

Early coleoids Proteroctopus Styletoctopus Keuppia Palaeoctopus Paleocirroteuthis

Ceratitid ammonoids late Nautilida

Advanced belemnoids Diplobelids: Diplobelus Belemnites: Belemnites Belemnopsis Belemnotheutis

Palaeozoic

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

Cambrian

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