A new species of Middle Miocene baleen whale from the Nupinai Group, Hikatagawa Formation of Hokkaido, Japan
A fossil whale from the Hikatagawa Formation (Middle Miocene, 15.2-11.5 Ma) of Hokkaido, Japan is described as a new genus and species Taikicetus inouei and its phylogenetic position is examined. Consistent with the result of Marx, Lambert & de Muizon (2017), the Cetotheriidae form a clade with...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/71751 2023-05-15T15:36:52+02:00 A new species of Middle Miocene baleen whale from the Nupinai Group, Hikatagawa Formation of Hokkaido, Japan Tanaka, Yoshihiro Ando, Tatsuro Sawamura, Hiroshi http://hdl.handle.net/2115/71751 https://doi.org/10.7717/peerj.4934 eng eng PeerJ http://hdl.handle.net/2115/71751 Peerj, 6: e4934 http://dx.doi.org/10.7717/peerj.4934 http://creativecommons.org/licenses/by/4.0/ CC-BY Fossil Baleen whale New genus New species Mysticeti 450 article fthokunivhus https://doi.org/10.7717/peerj.4934 2022-11-18T01:05:00Z A fossil whale from the Hikatagawa Formation (Middle Miocene, 15.2-11.5 Ma) of Hokkaido, Japan is described as a new genus and species Taikicetus inouei and its phylogenetic position is examined. Consistent with the result of Marx, Lambert & de Muizon (2017), the Cetotheriidae form a clade with the Balaenopteroidea, and "a clade comprising Isanacetus, Parietobalaena and related taxa" is located basal to the Balaenopteroidea + Cetotheriidae clade. Taikicetus inouei is placed in the clade with most of members of "Cetotheres" sensu lato comprising Isanacetus, Parietobalaena and related taxa. Taikicetus inouei can be distinguished from the other members of "Cetotheres" sensu lato in having an anteriorly swollen short zygomatic process, high triangular coronoid process, and angular process, which does not reach as far posterior as the mandibular condyle. Taikicetus inouei is only record of "Cetotheres" sensu lato from Hokkaido, Japan and the northern-most records of "Cetotheres" sensu lato in Japan. Article in Journal/Newspaper baleen whale Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) PeerJ 6 e4934 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Fossil Baleen whale New genus New species Mysticeti 450 |
spellingShingle |
Fossil Baleen whale New genus New species Mysticeti 450 Tanaka, Yoshihiro Ando, Tatsuro Sawamura, Hiroshi A new species of Middle Miocene baleen whale from the Nupinai Group, Hikatagawa Formation of Hokkaido, Japan |
topic_facet |
Fossil Baleen whale New genus New species Mysticeti 450 |
description |
A fossil whale from the Hikatagawa Formation (Middle Miocene, 15.2-11.5 Ma) of Hokkaido, Japan is described as a new genus and species Taikicetus inouei and its phylogenetic position is examined. Consistent with the result of Marx, Lambert & de Muizon (2017), the Cetotheriidae form a clade with the Balaenopteroidea, and "a clade comprising Isanacetus, Parietobalaena and related taxa" is located basal to the Balaenopteroidea + Cetotheriidae clade. Taikicetus inouei is placed in the clade with most of members of "Cetotheres" sensu lato comprising Isanacetus, Parietobalaena and related taxa. Taikicetus inouei can be distinguished from the other members of "Cetotheres" sensu lato in having an anteriorly swollen short zygomatic process, high triangular coronoid process, and angular process, which does not reach as far posterior as the mandibular condyle. Taikicetus inouei is only record of "Cetotheres" sensu lato from Hokkaido, Japan and the northern-most records of "Cetotheres" sensu lato in Japan. |
format |
Article in Journal/Newspaper |
author |
Tanaka, Yoshihiro Ando, Tatsuro Sawamura, Hiroshi |
author_facet |
Tanaka, Yoshihiro Ando, Tatsuro Sawamura, Hiroshi |
author_sort |
Tanaka, Yoshihiro |
title |
A new species of Middle Miocene baleen whale from the Nupinai Group, Hikatagawa Formation of Hokkaido, Japan |
title_short |
A new species of Middle Miocene baleen whale from the Nupinai Group, Hikatagawa Formation of Hokkaido, Japan |
title_full |
A new species of Middle Miocene baleen whale from the Nupinai Group, Hikatagawa Formation of Hokkaido, Japan |
title_fullStr |
A new species of Middle Miocene baleen whale from the Nupinai Group, Hikatagawa Formation of Hokkaido, Japan |
title_full_unstemmed |
A new species of Middle Miocene baleen whale from the Nupinai Group, Hikatagawa Formation of Hokkaido, Japan |
title_sort |
new species of middle miocene baleen whale from the nupinai group, hikatagawa formation of hokkaido, japan |
publisher |
PeerJ |
url |
http://hdl.handle.net/2115/71751 https://doi.org/10.7717/peerj.4934 |
genre |
baleen whale |
genre_facet |
baleen whale |
op_relation |
http://hdl.handle.net/2115/71751 Peerj, 6: e4934 http://dx.doi.org/10.7717/peerj.4934 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7717/peerj.4934 |
container_title |
PeerJ |
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6 |
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e4934 |
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1766367314029051904 |