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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crpeerj:10.7717/peerj.4934 2024-06-02T08:04:01+00:00 A new species of Middle Miocene baleen whale from the Nupinai Group, Hikatagawa Formation of Hokkaido, Japan Tanaka, Yoshihiro Ando, Tatsuro Sawamura, Hiroshi 2018 http://dx.doi.org/10.7717/peerj.4934 https://peerj.com/articles/4934.pdf https://peerj.com/articles/4934.xml https://peerj.com/articles/4934.html en eng PeerJ http://creativecommons.org/licenses/by/4.0/ PeerJ volume 6, page e4934 ISSN 2167-8359 journal-article 2018 crpeerj https://doi.org/10.7717/peerj.4934 2024-05-07T14:14:30Z 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 PeerJ Publishing PeerJ 6 e4934 |
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English |
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 |
spellingShingle |
Tanaka, Yoshihiro Ando, Tatsuro Sawamura, Hiroshi A new species of Middle Miocene baleen whale from the Nupinai Group, Hikatagawa Formation of Hokkaido, Japan |
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 |
publishDate |
2018 |
url |
http://dx.doi.org/10.7717/peerj.4934 https://peerj.com/articles/4934.pdf https://peerj.com/articles/4934.xml https://peerj.com/articles/4934.html |
genre |
baleen whale |
genre_facet |
baleen whale |
op_source |
PeerJ volume 6, page e4934 ISSN 2167-8359 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.7717/peerj.4934 |
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e4934 |
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