Leonardoceras (original) (raw)
Leonardoceras is a genus of nautiloid cephalopods from the lower Middle Ordovician of Nevada (USA), the shell a small slender exogastric cyrtocone with the venter more narrowly rounded than the dorsum, resembling in overall form a small Bassleroceras. Septa are close spaced, the living chamber short, the siphuncle close to the venter. The type species, Leonoardoceras parvum Flower was found the Antelope Valley limestone, in the north wall of Ikes Canyon in the Toquima Range, Nevada, about 11 feet below the top of the asaphid trilobite beds. No other species were named.
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dbo:abstract | Leonardoceras is a genus of nautiloid cephalopods from the lower Middle Ordovician of Nevada (USA), the shell a small slender exogastric cyrtocone with the venter more narrowly rounded than the dorsum, resembling in overall form a small Bassleroceras. Septa are close spaced, the living chamber short, the siphuncle close to the venter. The type species, Leonoardoceras parvum Flower was found the Antelope Valley limestone, in the north wall of Ikes Canyon in the Toquima Range, Nevada, about 11 feet below the top of the asaphid trilobite beds. No other species were named. Although in basic form Leonardoceras resembles Bassleroceras, it differs in the siphuncle. bassleroceratids have thick connecting rings inherited from their ellesmeroceratid ancestors, which were passed on to the Tarphycerida. Leonardoceras has a poorly preserved, narrow siphuncle, apparently with thin connecting rings characteristic of the Oncocerida and later Nautilida. Leonoardoceras is considered, as of ref. date, to be the most primitive of the Graciloceatidae, the ancestral family of the Oncocerida. (en) |
dbo:class | dbr:Cephalopod |
dbo:family | dbr:Graciloceratidae |
dbo:kingdom | dbr:Animal |
dbo:order | dbr:Oncocerida |
dbo:phylum | dbr:Mollusc |
dbo:wikiPageID | 42590758 (xsd:integer) |
dbo:wikiPageLength | 2101 (xsd:nonNegativeInteger) |
dbo:wikiPageRevisionID | 831629052 (xsd:integer) |
dbo:wikiPageWikiLink | dbr:Rousseau_H._Flower dbr:Ellesmeroceratidae dbr:Mollusc dbr:Animal dbr:Bassleroceras dbr:Bassleroceratidae dbc:Ordovician_cephalopods dbc:Ordovician_cephalopods_of_North_America dbc:Taxa_named_by_Rousseau_H._Flower dbr:Cephalopod dbr:Graciloceratidae dbr:Tarphycerida dbc:Prehistoric_nautiloid_genera dbr:Nautilida dbr:Nautiloid dbr:Oncocerida dbr:Ordovician |
dbp:classis | Cephalopoda (en) |
dbp:familia | dbr:Graciloceratidae |
dbp:fossilRange | early Middle Ordovician (en) |
dbp:genus | Leonardoceras (en) |
dbp:genusAuthority | Flower, 1968 (en) |
dbp:ordo | dbr:Oncocerida |
dbp:phylum | Mollusca (en) |
dbp:regnum | Animalia (en) |
dbp:wikiPageUsesTemplate | dbt:Reflist dbt:Taxobox dbt:Taxonbar dbt:Paleo-nautiloidea-stub |
dct:subject | dbc:Ordovician_cephalopods dbc:Ordovician_cephalopods_of_North_America dbc:Taxa_named_by_Rousseau_H._Flower dbc:Prehistoric_nautiloid_genera |
gold:hypernym | dbr:Cephalopod |
rdf:type | owl:Thing wikidata:Q19088 wikidata:Q729 wikidata:Q25326 dbo:Animal dbo:Eukaryote dbo:Mollusca dbo:Species yago:WikicatOrdovicianAnimals yago:Animal100015388 yago:LivingThing100004258 yago:Object100002684 yago:Organism100004475 yago:PhysicalEntity100001930 yago:Whole100003553 |
rdfs:comment | Leonardoceras is a genus of nautiloid cephalopods from the lower Middle Ordovician of Nevada (USA), the shell a small slender exogastric cyrtocone with the venter more narrowly rounded than the dorsum, resembling in overall form a small Bassleroceras. Septa are close spaced, the living chamber short, the siphuncle close to the venter. The type species, Leonoardoceras parvum Flower was found the Antelope Valley limestone, in the north wall of Ikes Canyon in the Toquima Range, Nevada, about 11 feet below the top of the asaphid trilobite beds. No other species were named. (en) |
rdfs:label | Leonardoceras (en) |
owl:sameAs | freebase:Leonardoceras yago-res:Leonardoceras wikidata:Leonardoceras https://global.dbpedia.org/id/eiSx |
prov:wasDerivedFrom | wikipedia-en:Leonardoceras?oldid=831629052&ns=0 |
foaf:isPrimaryTopicOf | wikipedia-en:Leonardoceras |
is dbo:wikiPageWikiLink of | dbr:List_of_prehistoric_nautiloid_genera dbr:List_of_the_Paleozoic_life_of_Nevada dbr:List_of_the_prehistoric_life_of_Nevada |
is foaf:primaryTopic of | wikipedia-en:Leonardoceras |