Template:Horikawa, 1981

• Horikawa, H. 1981. 新潟県小千谷市の魚沼層群(鮮新-更新統)より発見された新種の化石トドについて [On a new fossil sea-lion from the Uonuma Group (Plio-Pleistocene), Ojiya, Niigata Prefecture, Central Japan.] Earth Science 35(3): 159–178. DOI: 10.15080/agcjchikyukagaku.35.3_159  
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Nomenclatural acts

• Date of publication: 25 May 1981

New names

(List may be incomplete)

• Eumetopias ojiyaensis n. sp. [p. 98]