Ceratitida

Extinct order of molluscs

Ceratitida

Temporal range:  Middle Permian - Late Triassic

PreꞒ

Ceratites nodosus Upper Muschelkalk - Germany
Scientific classification
Domain:  | Eukaryota
Kingdom:  | Animalia
Phylum:  | Mollusca
Class:  | Cephalopoda
Subclass:  | †Ammonoidea
Order:  | †Ceratitida
Zittel, (1884)
Superfamilies

See text

Ceratitida is an order that contains almost all ammonoid cephalopod genera from the Triassic as well as ancestral forms from the Upper Permian, the exception being the phylloceratids which gave rise to the great diversity of post-Triassic ammonites.

Ceratitids overwhelmingly produced planospirally coiled discoidal shells that may be evolute with inner whorls exposed or involute with only the outer whorl showing. In a few later forms the shell became subglobular, in others, trochoidal or uncoiled. Sutures are typically ceratitic, with smooth saddles and serrate or digitized lobes. In a few the sutures are goniatitic while in others they are ammonitic.

## Taxonomy[edit]

* Ceratitida
* Ceratitoidea
* Choristoceratoidea
* Clydonitoidea
* Danubitoidea
* Dinaritoidea
* Lobitoidea
* Meekoceratoidea
* Megaphyllitoidea
* Nathorstitoidea
* Noritoidea
* Otoceratoidea
* Pinacoceratoidea
* Ptychitoidea
* Sageceratoidea
* Tropitoidea
* Xenodiscoidea

Only eight superfamilies are shown in the Treatise on Invertebrate Paleontology, Part L,(1957), the Otocerataceae, Noritaceae, Ceratitaceae, Arcestaceae, Clydonitaceae, Lobitaceae, Ptychitaceae, and Tropitaceae, in text sequence. The other 10 have been added since, derived from within the original eight.[citation needed]

## References[edit]

* Arkell et al., 1962, Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology part L, Mollusca 4, Ammonoidea. R.C. Moore (ed)
* Paleobiology Database

* v
* t
* e

Notable fossil cephalopods (listed by first occurrence)

Cenozoic|

* The belemnite-cuttlefish-like Belosaepia

Evolution of
cephalopods

Mesozoic|

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

Palaeozoic|

* 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

Taxon identifiers|

* Wikidata: Q1054661
* Wikispecies: Ceratitida
* BioLib: 133942
* Fossilworks: 14000
* IRMNG: 11216

|

This Ceratitida-related article is a stub. You can help Wikipedia by expanding it.

|

* v
* t
* e

*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template