|
Hokkaido University Collection of Scholarly and Academic Papers >
The Hokkaido University Museum >
Peer-reviewed Journal Articles, etc >
A new skull of an early diverging rorqual (Balaenopteridae, Mysticeti, Cetacea) from the late Miocene to early Pliocene of Yamagata, northeastern Japan
This item is licensed under:Creative Commons Attribution 4.0 International
| Title: | A new skull of an early diverging rorqual (Balaenopteridae, Mysticeti, Cetacea) from the late Miocene to early Pliocene of Yamagata, northeastern Japan |
| Authors: | Tanaka, Yoshihiro Browse this author →ORCID | | Nagasawa, Kazuo Browse this author | | Taketani, Yojiro Browse this author |
| Keywords: | rorquals | | Balaenopteridae | | Noguchi Formation | | Furukuchi Formation | | Miobalaenoptera numataensis | | ontogenetic variation |
| Issue Date: | 17-Mar-2020 |
| Publisher: | Coquina Press |
| Journal Title: | Palaeontologia Electronica |
| Volume: | 23 |
| Issue: | 1 |
| Start Page: | a12 |
| Publisher DOI: | 10.26879/1002 |
| Abstract: | The family of rorquals and humpback whales, Balaenopteridae includes the larg-est living animal on Earth, the blue whale Balaenoptera musculus. Many new taxa have been named, but not many from the western Pacific, except Miobalaenoptera numataensis from Japan. Here we describe an early balaenopterid, cf. M. numataensis from a late Miocene to early Pliocene sediment in Yamagata Prefecture, northeastern Japan. The species has a straight and sharp lateral ridge of the fovea epitubaria at the ventral surface of the periotic, and a dorsoventrally thin pars cochlearis. The new spec-imen provides knowledge of supposed ontogenetic variation and periotic morphology in poorly known fossil balaenopterids. |
| Rights: | Copyright: March 2020 Society of Vertebrate Paleontology. | | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/90473 |
| Appears in Collections: | 総合博物館 (The Hokkaido University Museum) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 田中 嘉寛
|
