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- Ammonitina abstract "Ammonitina comprises a diverse suborder of ammonite cephalopods that lived during the Jurassic and Cretaceous periods of the Mesozoic Era. They are excellent index fossils, and it is often possible to link the rock layer in which they are found to specific geological time periods.The shells of Ammonitina are typically planospiral; coiled in a plane, symmetrical side to side. Shells vary in form, including those that are evolute, such that all whorls are exposed, and those that are strongly involute with only the outer whorl showing. They may be strongly ribbed, some bearing nodes and spines; others are entirely smooth. Some have broad rounded venters (the outer rim); in others the venter is sharp and keel-like. Sutures are generally ammonitic, with intricately patterned saddle and lobes. However, in some derived forms the suture becomes simplified,ceratitic, even goniatitic.The Ammonitina are derived from the Phylloceratina, another ammonitid suborder which has its origin in the Ceratitida of the Triassic. As with the subclass, the closest living relatives of the Ammonitina are the Coleoidea (octopus, squid, and cuttlefish) and not the superficially similar modern Nautilus.Lower Jurassic superfamlies include the Psilocerataceae, Eocerocerataceae, and Hildoceratoidea, which is in part Middle Jurassic. Superfamilies from the Middle and Upper Jurassic include the Stephanoceratacea, Perispinctaceae, and Haploceratoidea; the Perispinctaceae and Haploceratacea continued well into the Cretaceous. Exclusively Cretaceous superfamilies include the Desmoceratacea, Hoplitaceae, and the Acanthoceratoidea.The Eoderocerataceae of the Lower Jurassic gave rise in the middle of the epoch to the Hilderceratidae, which in turn gave rise early in the Middle Jurassic to the Stephanocerataceae, Perispinctaceae, and Haploceratoidea. The Psiloceratacea from the Lower Jurassic stands alone.The Cretaceous Desmocerataceae are derived from the Phylloceratina separately from Jurassic forms and give rise to the Hoplitaceae and to the Acanthoceratoidea.".
- Ammonitina thumbnail Ammonite_Asteroceras.jpg?width=300.
- Ammonitina wikiPageID "13906718".
- Ammonitina wikiPageLength "3265".
- Ammonitina wikiPageOutDegree "37".
- Ammonitina wikiPageRevisionID "666945156".
- Ammonitina wikiPageWikiLink Acanthoceratoidea.
- Ammonitina wikiPageWikiLink Alpheus_Hyatt.
- Ammonitina wikiPageWikiLink Ammonoidea.
- Ammonitina wikiPageWikiLink Asteroceras.
- Ammonitina wikiPageWikiLink Category:Ammonitida.
- Ammonitina wikiPageWikiLink Category:Jurassic_first_appearances.
- Ammonitina wikiPageWikiLink Category:Late_Cretaceous_extinctions.
- Ammonitina wikiPageWikiLink Ceratitida.
- Ammonitina wikiPageWikiLink Coleoidea.
- Ammonitina wikiPageWikiLink Cretaceous.
- Ammonitina wikiPageWikiLink Cuttlefish.
- Ammonitina wikiPageWikiLink Desmocerataceae.
- Ammonitina wikiPageWikiLink Endemocerataceae.
- Ammonitina wikiPageWikiLink Eoderocerataceae.
- Ammonitina wikiPageWikiLink Geologic_time_scale.
- Ammonitina wikiPageWikiLink Hammatoceratoidea.
- Ammonitina wikiPageWikiLink Haploceratoidea.
- Ammonitina wikiPageWikiLink Hildoceratoidea.
- Ammonitina wikiPageWikiLink Hoplitoidea.
- Ammonitina wikiPageWikiLink Index_fossil.
- Ammonitina wikiPageWikiLink Jurassic.
- Ammonitina wikiPageWikiLink Mesozoic.
- Ammonitina wikiPageWikiLink Nautilus.
- Ammonitina wikiPageWikiLink Octopus.
- Ammonitina wikiPageWikiLink Perisphinctoidea.
- Ammonitina wikiPageWikiLink Psilocerataceae.
- Ammonitina wikiPageWikiLink Squid.
- Ammonitina wikiPageWikiLink Stephanoceratoidea.
- Ammonitina wikiPageWikiLink Taxonomic_rank.
- Ammonitina wikiPageWikiLink Triassic.
- Ammonitina wikiPageWikiLinkText "Ammonitina".
- Ammonitina wikiPageWikiLinkText "ammnites".
- Ammonitina wikiPageWikiLinkText "ammonite".
- Ammonitina wikiPageWikiLinkText "ammonites".
- Ammonitina wikiPageWikiLinkText "ammonitina".
- Ammonitina authority "Hyatt, 1889".
- Ammonitina imageCaption "Asteroceras, a Jurassic ammonite from England".
- Ammonitina subdivision "*Acanthoceratoidea *Desmocerataceae *Endemocerataceae *Eoderocerataceae *Hammatoceratoidea *Haplocerataceae *Hildoceratoidea *Hoplitaceae *Perisphinctaceae *Psilocerataceae *Stephanocerataceae".
- Ammonitina subdivisionRanks Taxonomic_rank.
- Ammonitina taxon "Ammonitina".
- Ammonitina wikiPageUsesTemplate Template:Automatic_taxobox.
- Ammonitina wikiPageUsesTemplate Template:Cite_book.
- Ammonitina wikiPageUsesTemplate Template:Commons_category.
- Ammonitina wikiPageUsesTemplate Template:Fossilrange.
- Ammonitina wikiPageUsesTemplate Template:Portal.
- Ammonitina wikiPageUsesTemplate Template:Reflist.
- Ammonitina wikiPageUsesTemplate Template:Wikispecies.
- Ammonitina subject Category:Ammonitida.
- Ammonitina subject Category:Jurassic_first_appearances.
- Ammonitina subject Category:Late_Cretaceous_extinctions.
- Ammonitina type Insect.
- Ammonitina comment "Ammonitina comprises a diverse suborder of ammonite cephalopods that lived during the Jurassic and Cretaceous periods of the Mesozoic Era. They are excellent index fossils, and it is often possible to link the rock layer in which they are found to specific geological time periods.The shells of Ammonitina are typically planospiral; coiled in a plane, symmetrical side to side.".
- Ammonitina label "Ammonitina".
- Ammonitina sameAs Q3343308.
- Ammonitina sameAs شاخقوچیان.
- Ammonitina sameAs Ammonitina.
- Ammonitina sameAs Ammonitina.
- Ammonitina sameAs Ammonitina.
- Ammonitina sameAs m.04y5h0c.
- Ammonitina sameAs Ammonitina.
- Ammonitina sameAs Q3343308.
- Ammonitina sameAs 菊石亞目.
- Ammonitina wasDerivedFrom Ammonitina?oldid=666945156.
- Ammonitina depiction Ammonite_Asteroceras.jpg.
- Ammonitina isPrimaryTopicOf Ammonitina.