[MARMAM] The anatomy of Cetotherium riabinini, a baleen whale from the late Miocene of Ukraine

Pavel Gol'din pavelgoldin412 at gmail.com
Wed Mar 13 07:18:28 PDT 2013


Dear colleagues,

We pleased to announce the following paper:

Pavel Gol’din, Dmitry Startsev, and Tatiana Krakhmalnaya. The anatomy
of Cetotherium riabinini Hofstein, 1948, a baleen whale from the late
Miocene of Ukraine. Acta Palaeontologica Polonica in press, available
online 13 Mar 2013 doi: http://dx.doi.org/10.4202/app.2012.0107

Abstract

We re-describe Cetotherium riabinini, a little known baleen whale from
the Late Miocene of the Eastern Paratethys. C. riabinini is
represented by an exceptionally well-preserved skull and partial
skeleton, and is shown to be closely related to C. rathkii, the only
other member of the genus. Cetotheriids from the Eastern Paratethys
are remarkable for their pachyosteosclerotic postcranial skeleton, and
are among the youngest known cetaceans displaying such an anatomy. C.
riabinini is hypothesised to have followed a generalised feeding
strategy combining herpetocetine-like continuous suction feeding, as
seen in the mallard Anas platyrhynchos, and eschrichtiid-like
intermittent suction feeding. This hypothesis may explain the
mechanism and function of cranial kinesis in baleen whales. Many
characteristics of the mysticete skull likely evolved as a result of
cranial kinesis, thus leading to multiple instances of morphological
convergence across several different phylogenetic lineages.

The paper is available online at:
http://www.app.pan.pl/article/item/app20120107.html

You can contact me at: pavelgoldin412 at gmail.com

Regards,
Pavel

Dr Pavel Gol'din
Department of Zoology
Taurida National University
Simferopol, Ukraine



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