Campbelloceras is a tarphyceratid nautiloid known from the Lower Ordovician, Upper Canadian Epoch of North America, where it is widespread. Campbelloceras was named by Ulrich and Foerste in 1936. The shell of Campbelloceras has a circular whorl section, only slightly impressed, and a siphuncle that is close to the venter in all growth stages. Campbelloceras differs from Tarphyceras in that the rate of expansion is greater, the siphuncle is proportionally largers, and an impression is shallower.
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Value |
| dbo:abstract |
Campbelloceras is a tarphyceratid nautiloid known from the Lower Ordovician, Upper Canadian Epoch of North America, where it is widespread. Campbelloceras was named by Ulrich and Foerste in 1936. The shell of Campbelloceras has a circular whorl section, only slightly impressed, and a siphuncle that is close to the venter in all growth stages. Campbelloceras differs from Tarphyceras in that the rate of expansion is greater, the siphuncle is proportionally largers, and an impression is shallower. Campbelloceras may have given rise to the barrandeocerid Plectoceras (Plectoceratidae) through simplification of the connecting rings, and to Tarphyceras through tighter coiling, development of a deeper impression, and reduction in the size of the siphuncle. Campbelloceras may be conceivably derived from Estonioceras (Estonioceratidae). The cross section of Campbelloceras and that of the outer whorl of Estonioceras are similar, except for Campbelloceras being slightly impressed. Both have proportionally large siphuncles, near the venter. (en) |
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18412789 (xsd:integer) |
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1931 (xsd:nonNegativeInteger) |
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1085211325 (xsd:integer) |
| dbo:wikiPageWikiLink |
dbr:Estonioceras dbr:Estonioceratidae dbc:Tarphycerida dbc:Paleozoic_life_of_Newfoundland_and_Labrador dbc:Paleozoic_life_of_Quebec dbc:Prehistoric_nautiloid_genera dbr:Treatise_on_Invertebrate_Paleontology dbr:Nautiloid dbr:Ordovician dbr:Canadian_Epoch dbr:Tarphyceras dbr:Plectoceras dbr:Plectoceratidae dbr:Tarphyceratidae dbr:Siphuncle |
| dbp:authority |
Ulrich and Foerste, 1936 (en) |
| dbp:taxon |
Campbelloceras (en) |
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dbt:Automatic_taxobox dbt:Reflist dbt:Taxonbar dbt:Fossilrange |
| dcterms:subject |
dbc:Tarphycerida dbc:Paleozoic_life_of_Newfoundland_and_Labrador dbc:Paleozoic_life_of_Quebec dbc:Prehistoric_nautiloid_genera |
| gold:hypernym |
dbr:Nautiloid |
| rdf:type |
dbo:Mollusca yago:WikicatCephalopods yago:Animal100015388 yago:Cephalopod101968315 yago:Invertebrate101905661 yago:LivingThing100004258 yago:Mollusk101940736 yago:Object100002684 yago:Organism100004475 yago:PhysicalEntity100001930 yago:Whole100003553 umbel-rc:Mollusk |
| rdfs:comment |
Campbelloceras is a tarphyceratid nautiloid known from the Lower Ordovician, Upper Canadian Epoch of North America, where it is widespread. Campbelloceras was named by Ulrich and Foerste in 1936. The shell of Campbelloceras has a circular whorl section, only slightly impressed, and a siphuncle that is close to the venter in all growth stages. Campbelloceras differs from Tarphyceras in that the rate of expansion is greater, the siphuncle is proportionally largers, and an impression is shallower. (en) |
| rdfs:label |
Campbelloceras (en) |
| owl:sameAs |
freebase:Campbelloceras yago-res:Campbelloceras wikidata:Campbelloceras https://global.dbpedia.org/id/faHY |
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wikipedia-en:Campbelloceras?oldid=1085211325&ns=0 |
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wikipedia-en:Campbelloceras |
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dbr:Arenig dbr:List_of_prehistoric_nautiloid_genera dbr:Curtoceras dbr:Tarphycerida dbr:List_of_the_Paleozoic_life_of_Alabama dbr:List_of_the_Paleozoic_life_of_Missouri dbr:List_of_the_Paleozoic_life_of_New_York_(state) dbr:List_of_the_Paleozoic_life_of_Oklahoma dbr:List_of_the_Paleozoic_life_of_Utah dbr:List_of_the_Paleozoic_life_of_Virginia dbr:List_of_the_prehistoric_life_of_Alabama dbr:List_of_the_prehistoric_life_of_Missouri dbr:List_of_the_prehistoric_life_of_New_York_(state) dbr:List_of_the_prehistoric_life_of_Oklahoma dbr:List_of_the_prehistoric_life_of_Utah dbr:List_of_the_prehistoric_life_of_Vermont dbr:List_of_the_prehistoric_life_of_Virginia dbr:Tarphyceras dbr:Plectoceras dbr:Plectoceratidae dbr:Tarphyceratidae |
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wikipedia-en:Campbelloceras |