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1 October 2018 Fossil Herpetocetine Baleen Whales (Cetacea, Mysticeti, Cetotheriidae) from the Lower Pliocene Horokaoshirarika Formation at Numata, Hokkaido, Northern Japan
Yoshihiro Tanaka, Hitoshi Furusawa, Lawrence G. Barnes
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Abstract

Two mandibles of fossil mysticetes from the early Pliocene, upper part of the Horokaoshirarika Formation at Numata Town, Hokkaido, Japan, belong to the archaic, extinct cetotheriid baleen whale, Herpetocetinae gen. et sp. indet. by having an elongated angular process projecting posteriorly beyond the mandibular condyle. The new materials of the Herpetocetinae represent their northernmost occurrence in the North Pacific.

© by the Palaeontological Society of Japan
Yoshihiro Tanaka, Hitoshi Furusawa, and Lawrence G. Barnes "Fossil Herpetocetine Baleen Whales (Cetacea, Mysticeti, Cetotheriidae) from the Lower Pliocene Horokaoshirarika Formation at Numata, Hokkaido, Northern Japan," Paleontological Research 22(4), 295-306, (1 October 2018). https://doi.org/10.2517/2017PR025
Received: 29 November 2015; Accepted: 25 November 2017; Published: 1 October 2018
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KEYWORDS
baleen whale
fossil
geographic range
Herpetocetinae
systematics
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