A geologically old and ontogenetically young Herpetocetus sp. from the late Miocene of Hokkaido, Japan
An ontogenetically young fossil baleen whale from the lower part of the Horokaoshirarika Formation of Hokkaido, Japan, includes a partial skull, periotics, bullae, mandible, vertebrae, and a scapula. It is identified as Herpetocetus sp. because it exhibits a postglenoid process of the squamosal more...
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ftdatacite:10.6084/m9.figshare.7249997.v2 2023-05-15T15:36:59+02:00 A geologically old and ontogenetically young Herpetocetus sp. from the late Miocene of Hokkaido, Japan Tanaka, Yoshihiro Mahito Watanabe 2019 https://dx.doi.org/10.6084/m9.figshare.7249997.v2 https://tandf.figshare.com/articles/Geologically_old_and_ontogenetically_young_i_Herpetocetus_i_sp_from_the_late_Miocene_of_Hokkaido_Japan/7249997/2 unknown Taylor & Francis https://dx.doi.org/10.1080/02724634.2018.1478842 https://dx.doi.org/10.6084/m9.figshare.7249997 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Biochemistry Physiology FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology Cancer Inorganic Chemistry Science Policy Text article-journal Journal contribution ScholarlyArticle 2019 ftdatacite https://doi.org/10.6084/m9.figshare.7249997.v2 https://doi.org/10.1080/02724634.2018.1478842 https://doi.org/10.6084/m9.figshare.7249997 2021-11-05T12:55:41Z An ontogenetically young fossil baleen whale from the lower part of the Horokaoshirarika Formation of Hokkaido, Japan, includes a partial skull, periotics, bullae, mandible, vertebrae, and a scapula. It is identified as Herpetocetus sp. because it exhibits a postglenoid process of the squamosal more transversely compressed than in Nannocetus , a deep and anteroposteriorly long fossa on the dorsal surface of the squamosal between the zygomatic process and the lateral wall of the brain case, and a prominent squamosal flange of the periotic. The Hokkaido specimen differs from currently described Herpetocetus species in having a large hiatus fallopii, and an angle at the anteromedial edge of the pars cochlearis, just medial to the hiatus fallopii. Because the lower part of the Horokaoshirarika Formation is late Miocene in age (approximately 7.7 to 6.8 Ma), the Hokkaido Herpetocetus specimen is the only record of Miocene Herpetocetinae from the western Pacific. Previously, Miocene Herpetocetinae were reported from the eastern North Pacific and western Atlantic. Accordingly, this new record of Herpetocetus from the upper Miocene of the western North Pacific suggests an earlier origin for both the genus and the subfamily. SUPPLEMENTAL DATA—Supplemental materials are available for this article for free at www.tandfonline.com/UJVP Citation for this article: Tanaka, Y., and M. Watanabe. 2018. A geologically old and ontogenetically young Herpetocetus sp. from the late Miocene of Hokkaido, Japan. Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2018.1478842. Text baleen whale DataCite Metadata Store (German National Library of Science and Technology) Pacific Fossa ENVELOPE(9.795,9.795,62.990,62.990) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biochemistry Physiology FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology Cancer Inorganic Chemistry Science Policy |
spellingShingle |
Biochemistry Physiology FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology Cancer Inorganic Chemistry Science Policy Tanaka, Yoshihiro Mahito Watanabe A geologically old and ontogenetically young Herpetocetus sp. from the late Miocene of Hokkaido, Japan |
topic_facet |
Biochemistry Physiology FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Ecology Cancer Inorganic Chemistry Science Policy |
description |
An ontogenetically young fossil baleen whale from the lower part of the Horokaoshirarika Formation of Hokkaido, Japan, includes a partial skull, periotics, bullae, mandible, vertebrae, and a scapula. It is identified as Herpetocetus sp. because it exhibits a postglenoid process of the squamosal more transversely compressed than in Nannocetus , a deep and anteroposteriorly long fossa on the dorsal surface of the squamosal between the zygomatic process and the lateral wall of the brain case, and a prominent squamosal flange of the periotic. The Hokkaido specimen differs from currently described Herpetocetus species in having a large hiatus fallopii, and an angle at the anteromedial edge of the pars cochlearis, just medial to the hiatus fallopii. Because the lower part of the Horokaoshirarika Formation is late Miocene in age (approximately 7.7 to 6.8 Ma), the Hokkaido Herpetocetus specimen is the only record of Miocene Herpetocetinae from the western Pacific. Previously, Miocene Herpetocetinae were reported from the eastern North Pacific and western Atlantic. Accordingly, this new record of Herpetocetus from the upper Miocene of the western North Pacific suggests an earlier origin for both the genus and the subfamily. SUPPLEMENTAL DATA—Supplemental materials are available for this article for free at www.tandfonline.com/UJVP Citation for this article: Tanaka, Y., and M. Watanabe. 2018. A geologically old and ontogenetically young Herpetocetus sp. from the late Miocene of Hokkaido, Japan. Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2018.1478842. |
format |
Text |
author |
Tanaka, Yoshihiro Mahito Watanabe |
author_facet |
Tanaka, Yoshihiro Mahito Watanabe |
author_sort |
Tanaka, Yoshihiro |
title |
A geologically old and ontogenetically young Herpetocetus sp. from the late Miocene of Hokkaido, Japan |
title_short |
A geologically old and ontogenetically young Herpetocetus sp. from the late Miocene of Hokkaido, Japan |
title_full |
A geologically old and ontogenetically young Herpetocetus sp. from the late Miocene of Hokkaido, Japan |
title_fullStr |
A geologically old and ontogenetically young Herpetocetus sp. from the late Miocene of Hokkaido, Japan |
title_full_unstemmed |
A geologically old and ontogenetically young Herpetocetus sp. from the late Miocene of Hokkaido, Japan |
title_sort |
geologically old and ontogenetically young herpetocetus sp. from the late miocene of hokkaido, japan |
publisher |
Taylor & Francis |
publishDate |
2019 |
url |
https://dx.doi.org/10.6084/m9.figshare.7249997.v2 https://tandf.figshare.com/articles/Geologically_old_and_ontogenetically_young_i_Herpetocetus_i_sp_from_the_late_Miocene_of_Hokkaido_Japan/7249997/2 |
long_lat |
ENVELOPE(9.795,9.795,62.990,62.990) |
geographic |
Pacific Fossa |
geographic_facet |
Pacific Fossa |
genre |
baleen whale |
genre_facet |
baleen whale |
op_relation |
https://dx.doi.org/10.1080/02724634.2018.1478842 https://dx.doi.org/10.6084/m9.figshare.7249997 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.7249997.v2 https://doi.org/10.1080/02724634.2018.1478842 https://doi.org/10.6084/m9.figshare.7249997 |
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