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Fossil counterparts of giant penguins from the north pacific.
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Fossil counterparts of giant penguins from the north pacific.

Author: SL Olson; Y Hasegawa
Edition/Format: Article Article : English
Publication:Science (New York, N.Y.) 1979 Nov 09; 206(4419): 688-9
Summary:
New fossils of giant, flightless penguinlike birds have been found in late Oligocene and early Miocene rocks in Japan and in the state of Washington. These birds belong to the order Pelecaniformes, in the extinct family Plotopteridae, previously known by a single fragment of bone from California. Hindlimb and pelvic morphology is most similar to that of Recent anhingas, but the wing is paddlelike and remarkably  Read more...
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Details

Document Type: Article
All Authors / Contributors: SL Olson; Y Hasegawa
ISSN:0036-8075
Language Note: English
Unique Identifier: 674161287
Awards:

Abstract:

New fossils of giant, flightless penguinlike birds have been found in late Oligocene and early Miocene rocks in Japan and in the state of Washington. These birds belong to the order Pelecaniformes, in the extinct family Plotopteridae, previously known by a single fragment of bone from California. Hindlimb and pelvic morphology is most similar to that of Recent anhingas, but the wing is paddlelike and remarkably convergent toward penguins and flightless auks. Both the Plotopteridae and the giant penguins became extinct by the middle Miocene, possibly because of competition from seals and porpoises.

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