[MARMAM] New publication - Tsai and Boessenecker 2017 Balaenoptera physalus Pleistocene California

Tsai, CH craniata at gmail.com
Sat May 13 18:36:50 PDT 2017

Dear Colleagues

We are pleased to announce a new paper, reporting the earliest-known fin
whale, *Balaenoptera physalus*, from the Early Pleistocene of California.

Tsai, C.-H., and R. W. Boessenecker. 2017. The earliest-known fin
whale, *Balaenoptera
physalus*, from the Early Pleistocene of Northern California, U.S.A.
Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2017.1306536.

We report a fossil tympanic bulla from the Rio Dell Formation of Northern
California, USA. The morphology of tympanic bulla in baleen whales
(Cetacea, Mysticeti) is highly diagnostic and this fossil is virtually
identical to the extant fin whale *Balaenoptera physalus*. Given its
geological age, early Pleistocene (~1.3–0.95 Ma), this specimen currently
represents the oldest known fossil record of the extant fin whale.
Accordingly, this find provides insight into the early evolution of the
speciose *Balaenoptera*.

The paper could be downloaded here:
or email me at:
craniata at gmail.com; cheng-hsiu.tsai at otago.ac.nz


蔡政修(Cheng-Hsiu Tsai  さい まさのぶ)
JSPS Postdoctoral Research Fellow  (JSPS: Japan Society for the Promotion
of Science 日本學術振興會)
Department of Geology and Paleontology,
National Museum of Nature and Science (Tsukuba Research Center)
4-1-1 Amakubo, Tsukuba-shi, Ibaraki 305-0005, Japan
Email: cheng-hsiu.tsai at otago.ac.nz; craniata at gmail.com
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