Ceratitida: Difference between revisions
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'''Ceratitida''' is an order that contains almost all [[Ammonoidea|ammonoid]] cephalopod genera from the [[Triassic]] as well as ancestral forms from the Upper [[Permian]], the exception being the [[Phylloceratina|phylloceratids]] which gave rise to the great diversity of post Triassic [[Ammonitida|ammonites]]. |
'''Ceratitida''' is an order that contains almost all [[Ammonoidea|ammonoid]] cephalopod genera from the [[Triassic]] as well as ancestral forms from the Upper [[Permian]], the exception being the [[Phylloceratina|phylloceratids]] which gave rise to the great diversity of post Triassic [[Ammonitida|ammonites]]. |
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Only eight superfamlies 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|date=October 2014}} |
Only eight superfamlies 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|date=October 2014}} |
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==References== |
== References == |
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{{reflist}} |
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* Arkell et al., 1962, Mesozoic Ammonoidea. [[Treatise on Invertebrate Paleontology]] part L, Mollusca 4, Ammonoidea. R.C. Moore (ed) |
* Arkell et al., 1962, Mesozoic Ammonoidea. [[Treatise on Invertebrate Paleontology]] part L, Mollusca 4, Ammonoidea. R.C. Moore (ed) |
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*[http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=94126&is_real_user=0 Paleobiology Database] |
*[http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=94126&is_real_user=0 Paleobiology Database] |
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[[Category:Lopingian first appearances]] |
[[Category:Lopingian first appearances]] |
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[[Category:Late Triassic extinctions]] |
[[Category:Late Triassic extinctions]] |
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[[Category:Mollusc orders]] |
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{{Ammonite-stub}} |
{{Ammonite-stub}} |
Revision as of 16:55, 17 August 2016
Ceratitida Temporal range:
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Ceratites nodosus Upper Muschelkal - 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
- Ceratitida
Only eight superfamlies 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
- Arkell et al., 1962, Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology part L, Mollusca 4, Ammonoidea. R.C. Moore (ed)
- Paleobiology Database