Enigmatic morphological disparity in tarsometatarsi of giant penguins from the Eocene of Antarctica

Enigmatic morphological disparity in tarsometatarsi of giant penguins from the Eocene of Antarctica The only record of the Paleogene Antarctic Sphenisciformes comes from the Eocene La Meseta Formation (Seymour Island, Antarctic Peninsula). The analysis of tarsometatarsi attributed to the genus Anthr...

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Bibliographic Details
Published in:Polish Polar Research
Main Authors: Hospitaleche, Carolina, Jadwiszczak, Piotr
Format: Article in Journal/Newspaper
Language:unknown
Published: Walter de Gruyter GmbH 2011
Subjects:
Ecology
Ecology, Evolution, Behavior and Systematics
Antarctic
Antarctic Peninsula
Argentine
Seymour
Seymour Island
Antarc*
Antarctica
Polar Research
Online Access:http://dx.doi.org/10.2478/v10183-011-0013-9
https://content.sciendo.com/view/journals/popore/32/2/article-p175.xml
https://www.degruyter.com/view/j/popore.2011.32.issue-2/v10183-011-0013-9/v10183-011-0013-9.pdf
Description
Summary:Enigmatic morphological disparity in tarsometatarsi of giant penguins from the Eocene of Antarctica The only record of the Paleogene Antarctic Sphenisciformes comes from the Eocene La Meseta Formation (Seymour Island, Antarctic Peninsula). The analysis of tarsometatarsi attributed to the genus Anthropornis ("giant" penguins) from the Argentine, Polish and Swedish collections revealed an intriguing heterogeneity within these taxonomically important elements of the skeleton. The unique hypotarsal morphology challenges the current systematics of large-bodied penguins and sheds new light on their evolution.

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