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- Orthocone abstract "An orthocone is a usually long straight shell of a nautiloid cephalopod. During the 18th and 19th centuries, all shells of this type were named Orthoceras, but it is now known that many groups of nautiloids developed or retained this type of shell.An orthocone can be thought of as like a Nautilus shell, but with the shell straight and uncoiled. It was previously believed that these represented the most primitive form of nautiloid, but it is now known that the earliest nautiloids had shells that were slightly curved. An orthoconic form evolved several times among cephalopods, and among nautiloid cephalopods is prevalent among the ellesmerocerids, endocerids, actinocerids, orthocerids, and bactritids.Orthocones existed from the Late Cambrian to the Late Triassic, but they were most common in the early Paleozoic. Revivals of the orthocone design later occurred in other cephalopod groups, notably baculitid ammonites in the Cretaceous Period. Orthocone nautiloids range in size from less than an inch to (in some giant endocerids of the Ordovician) seventeen feet (or five meters) long.".
- Orthocone thumbnail Ooland_baculite_Image0022_lo_res_3_x1_7.jpg?width=300.
- Orthocone wikiPageID "1676953".
- Orthocone wikiPageLength "1413".
- Orthocone wikiPageOutDegree "20".
- Orthocone wikiPageRevisionID "587080154".
- Orthocone wikiPageWikiLink Actinocerid.
- Orthocone wikiPageWikiLink Actinocerida.
- Orthocone wikiPageWikiLink Ammonite.
- Orthocone wikiPageWikiLink Ammonoidea.
- Orthocone wikiPageWikiLink Animal_shell.
- Orthocone wikiPageWikiLink Bactritid.
- Orthocone wikiPageWikiLink Bactritida.
- Orthocone wikiPageWikiLink Baculites.
- Orthocone wikiPageWikiLink Cambrian.
- Orthocone wikiPageWikiLink Category:Cephalopod_zootomy.
- Orthocone wikiPageWikiLink Cephalopod.
- Orthocone wikiPageWikiLink Cretaceous.
- Orthocone wikiPageWikiLink Ellesmerocerid.
- Orthocone wikiPageWikiLink Ellesmerocerida.
- Orthocone wikiPageWikiLink Endocerid.
- Orthocone wikiPageWikiLink Endocerida.
- Orthocone wikiPageWikiLink Exoskeleton.
- Orthocone wikiPageWikiLink Nautiloid.
- Orthocone wikiPageWikiLink Nautilus.
- Orthocone wikiPageWikiLink Ordovician.
- Orthocone wikiPageWikiLink Orthoceras.
- Orthocone wikiPageWikiLink Orthocerid.
- Orthocone wikiPageWikiLink Orthocerida.
- Orthocone wikiPageWikiLink Paleozoic.
- Orthocone wikiPageWikiLink Triassic.
- Orthocone wikiPageWikiLink File:Ooland_baculite_Image0022_lo_res_3_x1_7.jpg.
- Orthocone wikiPageWikiLinkText "Orthocone".
- Orthocone wikiPageWikiLinkText "long, straight shells".
- Orthocone wikiPageWikiLinkText "orthocone".
- Orthocone wikiPageWikiLinkText "orthoconic".
- Orthocone wikiPageWikiLinkText "straight-shelled".
- Orthocone hasPhotoCollection Orthocone.
- Orthocone wikiPageUsesTemplate Template:Cephalopod_anatomy.
- Orthocone wikiPageUsesTemplate Template:Unreferenced.
- Orthocone subject Category:Cephalopod_zootomy.
- Orthocone type Article.
- Orthocone type Article.
- Orthocone comment "An orthocone is a usually long straight shell of a nautiloid cephalopod. During the 18th and 19th centuries, all shells of this type were named Orthoceras, but it is now known that many groups of nautiloids developed or retained this type of shell.An orthocone can be thought of as like a Nautilus shell, but with the shell straight and uncoiled.".
- Orthocone label "Orthocone".
- Orthocone sameAs Ortocone.
- Orthocone sameAs Orthoconer.
- Orthocone sameAs m.05mmq5.
- Orthocone sameAs Ортокон.
- Orthocone sameAs Q1811658.
- Orthocone sameAs Q1811658.
- Orthocone wasDerivedFrom Orthocone?oldid=587080154.
- Orthocone depiction Ooland_baculite_Image0022_lo_res_3_x1_7.jpg.
- Orthocone isPrimaryTopicOf Orthocone.