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{{Short description|Extinct order of molluscs}}
{{Automatic taxobox
{{Automatic taxobox
| fossil_range = {{fossilrange|Jurassic|Cretaceous}}
| fossil_range = {{fossilrange|Jurassic|Cretaceous}} (Possible Early Paleocene fossils)
| image = Parapuzosia seppenradensis 3.jpg
| image = Parapuzosia seppenradensis 3.jpg
| image_caption = ''[[Parapuzosia seppenradensis]]'', the largest known ammonite (diameter 1.8 m)
| image_caption = ''[[Parapuzosia seppenradensis]]''
| taxon = Ammonitida
| taxon = Ammonitida
| authority = [[Alpheus Hyatt| Hyatt]] 1889
| authority = [[Alpheus Hyatt|Hyatt]] 1889
|subdivision_ranks = suborders
| subdivision_ranks = Suborders
|subdivision =
| subdivision = * [[Ammonitina]]
* [[Phylloceratina]]
* [[Lytoceratina]]
* [[Ancyloceratina]]
* [[Ancyloceratina]]
* [[Ammonitina]]
* [[Lytoceratina]]
* [[Phylloceratina]]
}}
}}


The '''Ammonitida''' is an order of more highly evolved [[Ammonoidea|ammonoid]] cephalopods from the [[Jurassic]] and [[Cretaceous]] time periods, commonly with intricate [[ammonitic suture]]s.
'''Ammonitida''' or "True ammonites" are an order of [[Ammonoidea|ammonoid]] [[cephalopod]]s that lived from the [[Jurassic]] through [[Paleocene]] time periods, commonly with intricate [[ammonitic suture]]s.


The Ammonitida are divided into four suborders, the [[Phylloceratina]], [[Lytoceratina]], [[Ancyloceratina]], and
Ammonitida is divided into four suborders, the [[Phylloceratina]], [[Lytoceratina]], [[Ancyloceratina]], and [[Ammonitina]].
[[Ammonitina]].


The Phylloceratina is the ancestral stock, derived from the [[Ceratitida]] near the end of the [[Triassic]]. The Phylloceratina gave rise to the Lytoceratina near the beginning of the Jurassic which in turn gave rise to the highly specialized Ancyloceratina near the end of the Jurassic. Both the Phylloceratina and Lytoceratina gave rise to various stocks combined in the Ammonitina.
The Phylloceratina is the ancestral stock, derived from the [[Ceratitida]] near the end of the [[Triassic]]. The Phylloceratina gave rise to the Lytoceratina near the beginning of the Jurassic which in turn gave rise to the highly specialized Ancyloceratina near the end of the Jurassic. Both the Phylloceratina and Lytoceratina gave rise to various stocks combined in the Ammonitina.


These four suborders are further divided into different stocks, comprising various families combined into superfamilies. Some like the [[Hildocerataceae]] and [[Stephanocerataceae]] are restricted to the Jurassic. Others like the [[Hoplitaceae]] and [[Acanthoceratoidea|Acanthocerataceae]] are known only from the Cretaceous. Still others like the [[Perisphinctaceae]] are found in both.
These four suborders are further divided into different stocks, comprising various families combined into superfamilies. Some like the [[Hildoceratoidea]] and [[Stephanoceratoidea]] are restricted to the Jurassic. Others like the [[Hoplitoidea]] and [[Acanthoceratoidea]] are known only from the Cretaceous. Still others like the [[Perisphinctoidea]] are found in both.


==References==
==References==
{{Wikispecies}}
*Arkell, et al., 1957. Mesozoic Ammonoidea; [[Treatise on Invertebrate Paleontology]], Part L, Ammonoidea. Geol Soc of America and Univ. Kansas press. R.C. Moore (Ed).
* {{cite book |author1= [[William Joscelyn Arkell|Arkell, W. J.]] |author2= Furnish, W. M. |author3= Kummel, Bernhard |author4= Miller, A.K. |author5= Moore, R.C. |author6= Schindewolf, O.H. |year= 1957 |chapter= Part L, Mollusca 4: Cephalopoda, Ammonoidea |title= Treatise on Invertebrate Paleontology |publisher= Geological Society of America and University of Kansas Press |editor= Raymond C. Moore |editor-link= Raymond Cecil Moore |url= https://archive.org/details/treatiseoninvert0000unse_n4o3/page/n3/mode/2up?view=theater |url-access= registration |via= [[Internet Archive]]}}
*[http://paleodb.org/cgi-bin/bridge.pl?action=startProcessPrintHierarchy&reference_no=27155&maximum_levels=100 Classification of N. H. Landman et al. 2007]
*[http://paleodb.org/cgi-bin/bridge.pl?action=startProcessPrintHierarchy&reference_no=27155&maximum_levels=100 Classification of N. H. Landman et al. 2007]

[[Category:Ammonites]]


{{fossil cephalopods}}
{{fossil cephalopods}}
{{Taxonbar|from=Q1650384}}
{{wikispecies}}
{{Authority control}}

[[Category:Ammonitida| ]]
[[Category:Ammonite taxonomy]]
[[Category:Cephalopod orders]]
[[Category:Jurassic first appearances]]
[[Category:Paleocene extinctions]]


{{Ammonitida-stub}}

Latest revision as of 01:23, 29 December 2023

Ammonitida
Temporal range: Jurassic–Cretaceous (Possible Early Paleocene fossils)
Parapuzosia seppenradensis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Hyatt 1889
Suborders

Ammonitida or "True ammonites" are an order of ammonoid cephalopods that lived from the Jurassic through Paleocene time periods, commonly with intricate ammonitic sutures.

Ammonitida is divided into four suborders, the Phylloceratina, Lytoceratina, Ancyloceratina, and Ammonitina.

The Phylloceratina is the ancestral stock, derived from the Ceratitida near the end of the Triassic. The Phylloceratina gave rise to the Lytoceratina near the beginning of the Jurassic which in turn gave rise to the highly specialized Ancyloceratina near the end of the Jurassic. Both the Phylloceratina and Lytoceratina gave rise to various stocks combined in the Ammonitina.

These four suborders are further divided into different stocks, comprising various families combined into superfamilies. Some like the Hildoceratoidea and Stephanoceratoidea are restricted to the Jurassic. Others like the Hoplitoidea and Acanthoceratoidea are known only from the Cretaceous. Still others like the Perisphinctoidea are found in both.

References[edit]

  • Arkell, W. J.; Furnish, W. M.; Kummel, Bernhard; Miller, A.K.; Moore, R.C.; Schindewolf, O.H. (1957). "Part L, Mollusca 4: Cephalopoda, Ammonoidea". In Raymond C. Moore (ed.). Treatise on Invertebrate Paleontology. Geological Society of America and University of Kansas Press – via Internet Archive.