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<p><b>New page</b></p><div>{{Short description|Genus of molluscs (fossil)}}<br />
{{Automatic taxobox<br />
| fossil_range = {{fossil range| Pliensbachian|ref=<ref name="Sepkoski Ceph">{{cite web<br />
| last = Sepkoski| first = Jack| title= Sepkoski's Online Genus Database| year = 2002| url = http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class| accessdate = 2014-05-28 }}</ref>}}<br />
| image = Apoderoceras FMNH.jpg<br />
| image_caption = Fossil specimen at [[Field Museum of Natural History]]<br />
| taxon = Apoderoceras<br />
| authority = Buckman, 1921<br />
| subdivision_ranks = Species<br />
| subdivision = {{Species list<br />
| {{extinct}}Apoderoceras antiquum | Lóczy, 1915<br />
| {{extinct}}Apoderoceras dunrobinense | Spath, 1926<br />
| {{extinct}}Apoderoceras ferox | Buckman, 1925<br />
| {{extinct}}Apoderoceras sparsinodum | Quenstedt, 1849<br />
| {{extinct}}Apoderoceras subtriangulare | Young and Bird, 1822<br />
}}<br />
| subdivision_ref = <ref>{{fossilworks |id=14567 |title=''Apoderoceras'' |date=29 April 2022}}</ref><br />
}}<br />
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'''''Apoderoceras''''' is an extinct genus of cephalopod belonging to the [[ammonite]] subclass. <br />
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Ammonites (Apoderoceras) were predatory mollusks that resembled a squid with a shell. These cephalopods had eyes, tentacles, and spiral shells. They are more closely related to a living octopus, though the shells resemble that of a nautilus. True ammonites appeared in the fossil record about 240 million years ago. The last lineages disappeared 65 million years ago at the end of the Cretaceous.<ref>https://www.fossilera.com/fossils/huge-13-spiny-jurassic-ammonite-apoderoceras-fossil-england</ref><br />
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== Biostratigraphic significance ==<br />
The [[International Commission on Stratigraphy]] (ICS) has assigned the [[First Appearance Datum]] of genus ''Apoderoceras'' and of ''[[Bifericeras|Bifericeras donovani]]'' the [[List of Global Boundary Stratotype Sections and Points#List|defining biological marker]] for the start of the [[Pliensbachian]] Stage of the [[Jurassic]], 190.8 ± 1.0 million years ago.<br />
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==Distribution==<br />
Jurassic of Argentina, Hungary, Italy, Portugal, the United Kingdom <ref name="fossilworks">{{cite web | title= Paleobiology Database| year = | url = https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=14587| access-date = 17 December 2021 }}</ref><br />
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==References==<br />
{{Reflist}}<br />
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{{Taxonbar|from=Q4780171}}<br />
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[[Category:Eoderoceratoidea]]<br />
[[Category:Ammonitida genera]]<br />
[[Category:Jurassic ammonites of Europe]]<br />
[[Category:Pliensbachian life]]<br />
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{{Ammonitina-stub}}</div>imported>GreenC bot