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An Early Pleistocene gray whale (Cetacea: Eschrichtiidae) from the Rio Dell Formation of northern California

  • Cheng-Hsiu Tsai (a1) and Robert W. Boessenecker (a1) (a2)
Abstract
Abstract

The earliest fossil gray whale (Eschrichtius) from the eastern North Pacific is reported from the Lower Pleistocene Rio Dell Formation of Humboldt County, Northern California. This specimen, a tympanic bulla and posterior process, is identical in morphology to extant Eschrichtius robustus and differs from Pliocene Eschrichtius sp. from the western North Pacific (Japan). Thus, it suggests that the modern bulla morphology of the gray whale had been acquired by the Early Pleistocene. The absence of fossil Eschrichtius in the Pliocene of the eastern North Pacific may indicate that the extant gray whale lineage originated in the western North Pacific during the Pliocene before invading the eastern North Pacific during the Early Pleistocene. Further discoveries of Plio-Pleistocene gray whale fossils will help test this hypothesis and properly interpret the evolutionary history of eschrichtiid clade.

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M. Bisconti , 2008, Morphology and phylogenetic relationships of a new eschrichtiid genus (Cetacea: Mysticeti) from the early Pliocene of northern Italy: Zoological Journal of the Linnean Society, v. 153, p. 161186, doi: 10.1111/j.1096-3642.2008.00374.x.

M. Bisconti , O. Lambert , and M. Bosselaers , 2013, Taxonomic revision of Isocetus depauwi (Mammalia, Cetacea, Mysticeti) and the phylogenetic relationships of archaic “cetothere” mysticetes: Palaeontology, v. 56, p. 95127, doi: 10.1111/j.1475-4983.2012.01168.x.

R.W. Boessenecker , 2011, New records of the fur seal Callorhinus (Carnivora: Otariidae) from the Plio-Pleistocene Rio Dell Formation of Northern California and comments on otariid dental evolution: Journal of Vertebrate Paleontology, v. 31, p. 454467, doi: 10.1080/02724634.2011.550362.

R.W. Boessenecker , 2013b, Pleistocene survival of an archaic dwarf baleen whale (Mysticeti: Cetotheriidae): Naturwissenschaften, v. 100, p. 365371, doi: 10.1007/s00114-013-1037-2.

T.A. Deméré , A. Berta , and M.R. McGowen , 2005, The taxonomic and evolutionary history of fossil and modern balaenopteroid mysticetes: Journal of Mammalian Evolution, v. 12, p. 99143, doi: 10.1007/s10914-005-6944-3.

E.G. Ekdale , A. Berta , and T.A. Deméré , 2011, The comparative osteology of the petrotympanic complex (ear region) of extant baleen whales (Cetacea: Mysticeti): PLoS ONE, v. 6, p. e21311, doi: 10.1371/journal.pone.0021311.

J. H. Geisler , M.R. McGowen , G. Yang , and J. Gatesy , 2011, A supermatrix analysis of genomic, morphological, and paleontological data from crown Cetacea: BMC Evolutionary Biology, v. 11, no. 112, 33 p. doi:10.1186/1471-2148-11-112.

E.M.G. Fitzgerald , 2012, Possible neobalaenid from the Miocene of Australia implies a long evolutionary history for the pygmy right whale Caperea marginata (Cetacea, Mysticeti): Journal of Vertebrate Paleontology, v. 32, p. 976980, doi: 10.1080/02724634.2012.669803.

F.J. Hilgen , L.J. Lourens , J.A. Van Dam , A.G. Beu , A.F. Boyes , R.A. Cooper , W. Krijgsman , J.G. Ogg , W.E. Piller , and D.S. Wilson , 2012, Chapter 29 - The Neogene Period, in Gradstein, F.M., Schmitz, J.G.O.D., and Ogg, G.M., eds., The Geologic Time Scale, Boston, Elsevier, p. 923978, doi: 10.1016/B978-0-444-59425-9.00029-9.

H. Ichishima , E. Sato , T. Sagayama , and M. Kimura , 2006, The oldest record of Eschrichtiidae (Cetacea: Mysticeti) from the Late Pliocene, Hokkaido, Japan: Journal of Paleontology, v. 80, p. 367379, doi: 10.1666/0022-3360(2006)080[0367:TOROEC]2.0.CO: 2.

M.L. Jones , and S.L. Swartz , 2009, Gray whale, Eschrichtius robustus, in Perrin, W.F., Würsig, B. G., and Thewissen, J., eds., Encyclopedia of Marine Mammals. Academic Press, p. 503511.

F.G. Marx , 2011, The more the merrier? A large cladistic analysis of mysticetes, and comments on the transition from teeth to baleen: Journal of Mammalian Evolution, v. 18, p. 77100, doi: 10.1007/s10914-010-9148-4.

J.G. Mead , and E.D. Mitchell , 1984, Atlantic gray whales, in Jones, M.L., Swartz, S.L., and Leatherwood, S., eds., The Gray Whale, Eschrichtius robustus, Academic Press, p. 3353.

S. Miyazaki , H. Horkawa , N. Kohno , K. Hirota , M. Kimura , Y. Hasegawa , Y. Tomida , L.G. Barnes , and C.E. Ray , 1995, Summary of the fossil record of pinnipeds of Japan, and comparisons with that from the eastern North Pacific: Island Arc, v. 3, p. 361372, doi: 10.1111/j.1440-1738.1994.tb00120.x.

M. Nikaido , H. Hamilton , H. Makino , T. Sasaki , K. Takahashi , M. Goto , N. Kanda , L.A. Pastene , and N. Okada , 2006, Baleen whale phylogeny and a past extensive radiation event revealed by SINE Insertion Analysis: Molecular Biology and Evolution, v. 23, p. 866873, doi: 10.1093/molbev/msj071.

S.E. Noakes , N.D. Pyenson , and G. McFall , 2013, Late Pleistocene gray whales (Eschrichtius robustus) offshore Georgia, U.S.A., and the antiquity of gray whale migration in the North Atlantic Ocean: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 392, p. 502509, doi: 10.1016/j.palaeo.2013.10.005.

C.A. Repenning , 1983, New evidence for the age of the Gubik Formation Alaskan North Slope: Quaternary Research, v. 19, p. 356372, doi: 10.1016/0033-5894(83)90041-8.

M.E. Steeman , 2007, Cladistic analysis and a revised classification of fossil and recent mysticetes: Zoological Journal of the Linnean Society, v. 150, p. 875894, doi: 10.1111/j.1096-3642.2007.00313.x.

C.-H. Tsai , R.E. Fordyce , C.-H. Chang , and L.-K. Lin , 2014, Quaternary fossil gray whales from Taiwan: Paleontological Research, v. 18, p. 8293, doi: 10.2517/2014PR009.

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Journal of Paleontology
  • ISSN: 0022-3360
  • EISSN: 1937-2337
  • URL: /core/journals/journal-of-paleontology
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