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A history of digit identification in the manus of theropods (including Aves)

By
Kasper Lykke Hansen
Kasper Lykke Hansen
Zoological Museum, Natural History Museum of Denmark
,
University of Copenhagen
,
Universitetsparken 15, DK-2100 Copenhagen Ø
,
Denmark
(e-mail: stenfisker@live.dk)
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Published:
January 01, 2010

Abstract

The identification of avian and dinosaurian digits remains one of the major controversies in vertebrate evolution. A long history of morphological interpretations of fossil forms and studies of limb development in embryos has been given as evidence for two differing points of view. From an originally pentadactyl forelimb, either digits I, II and III form in the manus of birds and thus support a dinosaurian ancestry, or digits II, III and IV form in the manus supporting a more ancient ancestry or an evolutionary frame shift. A review of the history of research into the subject is presented here, dating from approximately 1825 to 2009.

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Geological Society, London, Special Publications

Dinosaurs and Other Extinct Saurians: A Historical Perspective

R. T. J. Moody
R. T. J. Moody
Kingston University, UK
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;
E. Buffetaut
E. Buffetaut
CNRS, Ecole Normale Supérieure, Paris, France
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;
D. Naish
D. Naish
University of Portsmouth, UK
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;
D. M. Martill
D. M. Martill
University of Portsmouth, UK
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Geological Society of London
Volume
343
ISBN electronic:
9781862395916
Publication date:
January 01, 2010

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