| From fins to limbs to fins: limb evolution in fossil marine reptiles. | |
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MedLine Citation:
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PMID: 12357467 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Limb osteology and ontogenetic patterns of limb ossification are reviewed for extinct lineages of aquatically adapted diapsid reptiles. Phylogenies including these fossil taxa show that paddle-like limbs were independently derived, and that the varied limb morphologies were produced by evolutionary modifications to different aspects of the limb skeleton. Ancient marine reptiles modify the limb by reducing the relative size of the epipodials, modifying the perichondral and periosteal surface of elements distal to the propodials, and evolving extremes of hyperphalangy and hyperdactyly. Developmental genetic models illuminate gene systems that may have controlled limb evolution in these animals. |
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Authors:
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Michael W Caldwell |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Review |
Journal Detail:
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Title: American journal of medical genetics Volume: 112 ISSN: 0148-7299 ISO Abbreviation: Am. J. Med. Genet. Publication Date: 2002 Oct |
Date Detail:
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Created Date: 2002-10-01 Completed Date: 2003-03-17 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7708900 Medline TA: Am J Med Genet Country: United States |
Other Details:
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Languages: eng Pagination: 236-49 Citation Subset: IM |
Copyright Information:
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Copyright 2002 Wiley-Liss, Inc. |
Affiliation:
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Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta, Canada. mw.caldwell@ualberta.ca |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Alligators and Crocodiles
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anatomy & histology,
genetics,
growth & development Animals Bone Development Cartilage / anatomy & histology Dinosaurs / anatomy & histology, genetics, growth & development Evolution* Extremities / anatomy & histology Fossils Lizards / anatomy & histology, genetics, growth & development Marine Biology Models, Genetic Phylogeny Reptiles / anatomy & histology*, genetics*, growth & development |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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