REDESCRIPTION OF CROSSVALLIA UNIENWILLIA - THE ONLY PALEOCENE ANTARCTIC PENGUIN

Authors

  • Piotr Jadwiszczak Institute of Biology, University of Bialystok, Bialystok, Poland
  • Carolina Acosta Hospitaleche División Paleontología Vertebrados, Museo de La Plata
  • Marcelo Reguero División Paleontología Vertebrados, Museo de La Plata

DOI:

https://doi.org/10.5710/AMGH.09.10.2013.1058

Keywords:

Early Paleogene, Marambio (Seymour) Island, Cross Valley Formation, Crossvallia unienwillia, limb bones, thoracic vertebra

Abstract

Redescribed and reinterpreted here is a partial skeleton of the oldest Antarctic penguin, Crossvallia unienwillia from the late Pa- leocene of Marambio (Seymour) Island. A thorough morphological analysis of limb bones (humerus, femur and tibiotarsus) allowed us to report both an amended reconstruction of type specimens and a revised taxonomic diagnosis of this large-sized early penguin. Moreover, an additional skeletal element, a single thoracic vertebra, is described for the first time. C. unienwillia is characterized by a mixture of features typical of both geologically older and younger penguins, supplemented by characters that are obviously unique. The above-mentioned fin- dings shed new light on the very beginning of penguin evolution.

Published

2013-12-04

Issue

Section

Articles

How to Cite

REDESCRIPTION OF CROSSVALLIA UNIENWILLIA - THE ONLY PALEOCENE ANTARCTIC PENGUIN. (2013). Ameghiniana, 50(6), 545-553. https://doi.org/10.5710/AMGH.09.10.2013.1058

Most read articles by the same author(s)

1 2 > >>