IRMNG taxon details
original description
L. G. Barnes, C. E. Ray, and I. Koretsky. (2006). A new Pliocene sea lion, Proterozetes ulysses (Mammalia: Otariidae) from Oregon, U.S.A. Pp. 57-77 in: Csiki, Z. (ed.). <i>Mesozoic and Cenozoic Vertebrates and Paleoenvironments: Tributes to the Career of Professor Dan Grigorescu</i>. Bucharest: Ars Docendi. 227 pp. ISBN 978-973-558-275-3., available online at https://www.researchgate.net/publication/281033674 [details]
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