Project 5143: R. W. Boessenecker, A. W. Poust, S. J. Boessenecker, M. Churchill. 2023. Tusked walruses (Carnivora: Odobenidae) from the Miocene-Pliocene Purisima Formation of Santa Cruz, California (U.S.A.): a new species of the toothless walrus Valenictus and the oldest records of Odobeninae and Odobenini. Journal of Vertebrate Paleontology. 43 (3):null.
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