Eodelphis kabatensis, a New Name for the Oldest True Dolphin Stenella kabatensis Horikawa, 1977 (Cetacea, Odontoceti, Delphinidae), from the Upper Miocene of Japan, and the Phylogeny and Paleobiogeography of Delphinoidea
The oldest reported fossil record of Delphinidae is from the late Miocene (11 Ma) of California. Reliable Miocene fossil delphinids, however, are few. Eodelphis kabatensis from the upper Miocene Mashike Formation (8.5–13.0 Ma), Hokkaido, northern Japan, is the oldest described Miocene delphinid incl...
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| Veröffentlicht in: | Journal of vertebrate paleontology 2014-05, Vol.34 (3), p.491-511 |
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| creator | Murakami, Mizuki Shimada, Chieko Hikida, Yoshinori Soeda, Yuhji Hirano, Hiromichi |
| description | The oldest reported fossil record of Delphinidae is from the late Miocene (11 Ma) of California. Reliable Miocene fossil delphinids, however, are few. Eodelphis kabatensis from the upper Miocene Mashike Formation (8.5–13.0 Ma), Hokkaido, northern Japan, is the oldest described Miocene delphinid including a skull. Therefore, this species is a significant clue to understanding the early evolutionary history of Delphinidae. The original taxonomic assignment of this species within the genus Stenella is questionable; thus, we propose a new combination for the species, Eodelphis kabatensisHorikawa, 1977. Eodelphis is a basal delphinid, and comprehensive morphological cladistic analysis, including molecular topological constraints, supported this taxonomic revision. Paleobiogeographic analyses based on the present morphological cladistic analysis and analysis under the molecular constraints suggest that the origin and early diversification of Delphinidae occurred in the middle Miocene Pacific Ocean or elsewhere, respectively. |
| doi_str_mv | 10.1080/02724634.2013.816720 |
| format | Article |
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Reliable Miocene fossil delphinids, however, are few. Eodelphis kabatensis from the upper Miocene Mashike Formation (8.5–13.0 Ma), Hokkaido, northern Japan, is the oldest described Miocene delphinid including a skull. Therefore, this species is a significant clue to understanding the early evolutionary history of Delphinidae. The original taxonomic assignment of this species within the genus Stenella is questionable; thus, we propose a new combination for the species, Eodelphis kabatensisHorikawa, 1977. Eodelphis is a basal delphinid, and comprehensive morphological cladistic analysis, including molecular topological constraints, supported this taxonomic revision. Paleobiogeographic analyses based on the present morphological cladistic analysis and analysis under the molecular constraints suggest that the origin and early diversification of Delphinidae occurred in the middle Miocene Pacific Ocean or elsewhere, respectively.</description><identifier>ISSN: 0272-4634</identifier><identifier>EISSN: 1937-2809</identifier><identifier>DOI: 10.1080/02724634.2013.816720</identifier><language>eng</language><publisher>Society of Vertebrate Paleontology</publisher><subject>Biological taxonomies ; Cetacea ; Cetaceans ; Cladistics ; Delphinidae ; Delphinoidea ; FEATURED ARTICLE ; Fossils ; Holotypes ; Marine ; Maxilla ; Mudstone ; Oceans ; Odontoceti ; Sinuses ; Skull ; Stenella</subject><ispartof>Journal of vertebrate paleontology, 2014-05, Vol.34 (3), p.491-511</ispartof><rights>Mizuki Murakami, Chieko Shimada, Yoshinori Hikida, Yuhji Soeda, and Hiromichi Hirano</rights><rights>Published with license by Taylor & Francis © Mizuki Murakami, Chieko Shimada, Yoshinori Hikida, Yuhji Soeda, and Hiromichi Hirano 2014</rights><rights>Copyright © 2014 Society of Vertebrate Paleontology</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-b405t-359eabdf2e6b779493671ec47178860b8d5c27464a1f4de0834fd70e62a2bbe63</citedby><cites>FETCH-LOGICAL-b405t-359eabdf2e6b779493671ec47178860b8d5c27464a1f4de0834fd70e62a2bbe63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/24523273$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/24523273$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,27924,27925,58017,58250</link.rule.ids></links><search><creatorcontrib>Murakami, Mizuki</creatorcontrib><creatorcontrib>Shimada, Chieko</creatorcontrib><creatorcontrib>Hikida, Yoshinori</creatorcontrib><creatorcontrib>Soeda, Yuhji</creatorcontrib><creatorcontrib>Hirano, Hiromichi</creatorcontrib><title>Eodelphis kabatensis, a New Name for the Oldest True Dolphin Stenella kabatensis Horikawa, 1977 (Cetacea, Odontoceti, Delphinidae), from the Upper Miocene of Japan, and the Phylogeny and Paleobiogeography of Delphinoidea</title><title>Journal of vertebrate paleontology</title><description>The oldest reported fossil record of Delphinidae is from the late Miocene (11 Ma) of California. 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Reliable Miocene fossil delphinids, however, are few. Eodelphis kabatensis from the upper Miocene Mashike Formation (8.5–13.0 Ma), Hokkaido, northern Japan, is the oldest described Miocene delphinid including a skull. Therefore, this species is a significant clue to understanding the early evolutionary history of Delphinidae. The original taxonomic assignment of this species within the genus Stenella is questionable; thus, we propose a new combination for the species, Eodelphis kabatensisHorikawa, 1977. Eodelphis is a basal delphinid, and comprehensive morphological cladistic analysis, including molecular topological constraints, supported this taxonomic revision. Paleobiogeographic analyses based on the present morphological cladistic analysis and analysis under the molecular constraints suggest that the origin and early diversification of Delphinidae occurred in the middle Miocene Pacific Ocean or elsewhere, respectively.</abstract><pub>Society of Vertebrate Paleontology</pub><doi>10.1080/02724634.2013.816720</doi><tpages>21</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of vertebrate paleontology, 2014-05, Vol.34 (3), p.491-511 |
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| language | eng |
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| source | JSTOR Archive Collection A-Z Listing |
| subjects | Biological taxonomies Cetacea Cetaceans Cladistics Delphinidae Delphinoidea FEATURED ARTICLE Fossils Holotypes Marine Maxilla Mudstone Oceans Odontoceti Sinuses Skull Stenella |
| title | Eodelphis kabatensis, a New Name for the Oldest True Dolphin Stenella kabatensis Horikawa, 1977 (Cetacea, Odontoceti, Delphinidae), from the Upper Miocene of Japan, and the Phylogeny and Paleobiogeography of Delphinoidea |
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