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Reidentification of Portheus patagonicus Ameghino, 1901, a supposed fish from the middle Tertiary of Patagonia, as a delphinoid cetacean

Published online by Cambridge University Press:  14 July 2015

Alberto Luis Cione  and
Mario Alberto Cozzuol
Alberto Luis Cione
Affiliation:
División Paleontología Vertebrados, Museo de La Plata, 1900 La Plata, Argentina
Mario Alberto Cozzuol
Affiliation:
Laboratorio de Paleontología, Centro Nacional Patagónico, 9120 Puerto Madryn, Argentina
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Abstract

Portheus patagonicus Ameghino, 1901, described on the basis of an isolated tooth from the Leonian Stage (Upper Oligocene–Lower Miocene) of Patagonia, was interpreted as belonging to an ichthyodectiform fish. Recently, the holotype was relocated and an additional tooth was found. Comparison of both specimens and some additional information permit the identification of the teeth as belonging to a delphinoid cetacean of the family Kentriodontidae. This is the first report of this family in the southern Atlantic region.

Type
Research Article
Information
Journal of Paleontology , Volume 64 , Issue 3 , May 1990 , pp. 451 - 453
Copyright
Copyright © The Paleontological Society 

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