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Statements

Subject Item
dbr:Discosorida
rdf:type
yago:LivingThing100004258 yago:Organism100004475 yago:Invertebrate101905661 yago:Mollusk101940736 dbo:Eukaryote yago:WikicatCephalopods dbo:Insect umbel-rc:Mollusk yago:Object100002684 yago:Cephalopod101968315 yago:PhysicalEntity100001930 yago:Animal100015388 yago:WikicatExtinctMolluscs yago:Whole100003553
rdfs:label
Discosorida Discosorida Discosorida
rdfs:comment
Discosorida are an order of cephalopods that lived from the beginning of the Middle Ordovician, through the Silurian, and into the Devonian. Discosorids are unique in the structure and formation of the siphuncle, the tube that runs through and connects the camerae (chambers) in cephalopods, which unlike those in other orders is zoned longitudinally along the segments rather than laterally. Siphuncle structure indicated that the Discosorida evolved directly from the Plectronoceratida rather than through the more developed Ellesmerocerida, as did the other orders. Finally and most diagnostic, discosorids developed a reinforcing, grommet-like structure in the septal opening of the siphuncle known as the bullette, formed by a thickening of the connecting ring as it draped around the folded bac I Discosorida sono un ordine di molluschi cefalopodi estinti, appartenenti alla sottoclasse Nautiloidea, conosciuti dall'Ordoviciano Medio al Devoniano. Si tratta di un gruppo piuttosto composito e di origine ancora dibattuta.
dcterms:subject
dbc:Cephalopod_orders dbc:Devonian_extinctions dbc:Middle_Ordovician_first_appearances dbc:Discosorida
dbo:wikiPageID
10294367
dbo:wikiPageRevisionID
1020402408
dbo:wikiPageWikiLink
dbc:Discosorida dbr:Mandaloceratidae dbc:Middle_Ordovician_first_appearances dbr:Plectronocerida dbr:Discosoridae dbr:Siphuncle dbr:Ordovician dbr:Cyrtogomphoceratidae dbr:Bullette dbr:Westonoceratidae dbr:Tremadocian dbr:Plectronoceratida dbc:Cephalopod_orders dbr:Phragmoceratidae dbr:Lowoceratidae dbc:Devonian_extinctions dbr:Benthic dbr:Ellesmerocerida dbr:Reudemannoceratidae dbr:Silurian dbr:Devonian dbr:Exogastric dbr:Grommet dbr:Cephalopod dbr:Camera_(anatomy) dbr:Oncocerida
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dbt:Fossil_cephalopods dbt:Reflist dbt:Fossil_range dbt:Short_description dbt:Automatic_taxobox dbt:Taxonbar
dbp:taxon
Discosorida
dbo:abstract
I Discosorida sono un ordine di molluschi cefalopodi estinti, appartenenti alla sottoclasse Nautiloidea, conosciuti dall'Ordoviciano Medio al Devoniano. Si tratta di un gruppo piuttosto composito e di origine ancora dibattuta. Discosorida are an order of cephalopods that lived from the beginning of the Middle Ordovician, through the Silurian, and into the Devonian. Discosorids are unique in the structure and formation of the siphuncle, the tube that runs through and connects the camerae (chambers) in cephalopods, which unlike those in other orders is zoned longitudinally along the segments rather than laterally. Siphuncle structure indicated that the Discosorida evolved directly from the Plectronoceratida rather than through the more developed Ellesmerocerida, as did the other orders. Finally and most diagnostic, discosorids developed a reinforcing, grommet-like structure in the septal opening of the siphuncle known as the bullette, formed by a thickening of the connecting ring as it draped around the folded back septal neck.
gold:hypernym
dbr:Order
prov:wasDerivedFrom
wikipedia-en:Discosorida?oldid=1020402408&ns=0
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5459
foaf:isPrimaryTopicOf
wikipedia-en:Discosorida