Obinautilus
http://dbpedia.org/resource/Obinautilus <http://umbel.org/umbel/rc/Mollusk>
Obinautilus is an extinct genus of shelled cephalopod that has been variously identified as an argonautid octopod or a nautilid. It is known from the Late Oligocene to Pliocene of Japan. The shell is discoidal and very involute, with rapidly expanding and compressed whorls, fine radial ribs, a rounded venter with a shallow furrow, and almost closed umbilicus. Based on the examination of O. pulcher fossils from the Oligocene, the Tremoctopus–Argonauta divergence has been estimated to have occurred at least 29 million years ago.
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安房寬帶船蛸（學名：Obinautilus awaensis）為一種滅絕種章魚。本種於1983年發表描述，基於自上新世日本房總半島出土的化石材料上。 本分類單元的原初描述劃為船蛸屬的種類之一，然而此後就移動到。
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Obinautilus
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安房寬帶船蛸
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9408350
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1118575285
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Kobayashi, 1954
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(Kobayashi, 1954)
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*†Obinautilus awaensis
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*†Obinautilus pulcher
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Species
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Obinautilus
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Obinautilus is an extinct genus of shelled cephalopod that has been variously identified as an argonautid octopod or a nautilid. It is known from the Late Oligocene to Pliocene of Japan. The shell is discoidal and very involute, with rapidly expanding and compressed whorls, fine radial ribs, a rounded venter with a shallow furrow, and almost closed umbilicus. Based on the examination of O. pulcher fossils from the Oligocene, the Tremoctopus–Argonauta divergence has been estimated to have occurred at least 29 million years ago.
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安房寬帶船蛸（學名：Obinautilus awaensis）為一種滅絕種章魚。本種於1983年發表描述，基於自上新世日本房總半島出土的化石材料上。 本分類單元的原初描述劃為船蛸屬的種類之一，然而此後就移動到。
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5114