Document Detail

A gliding lizard from the Early Cretaceous of China.
MedLine Citation:
PMID:  17376871     Owner:  NLM     Status:  MEDLINE    
Gliding is an energetically efficient mode of locomotion that has evolved independently, and in different ways, in several tetrapod groups. Here, we report on an acrodontan lizard from the Early Cretaceous Jehol Group of China showing an array of morphological traits associated with gliding. It represents the only known occurrence of this specialization in a fossil lizard and provides evidence of an Early Cretaceous ecological diversification into an aerial niche by crown-group squamates. The lizard has a dorsal-rib-supported patagium, a structure independently evolved in the Late Triassic basal lepidosauromorph kuehneosaurs and the extant agamid lizard Draco, revealing a surprising case of convergent evolution among lepidosauromorphans. A patagial character combination of much longer bilaterally than anteroposteriorly, significantly thicker along the leading edge than along the trailing edge, tapered laterally to form a wing tip, and secondarily supported by an array of linear collagen fibers is not common in gliders and enriches our knowledge of gliding adaptations among tetrapods.
Pi-Peng Li; Ke-Qin Gao; Lian-Hai Hou; Xing Xu
Publication Detail:
Type:  Historical Article; Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-03-21
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  104     ISSN:  0027-8424     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2007 Mar 
Date Detail:
Created Date:  2007-03-28     Completed Date:  2007-05-14     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5507-9     Citation Subset:  IM    
Shenyang Normal University, Shenyang 110034, People's Republic of China.
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MeSH Terms
Biological Evolution
Bone and Bones
Flight, Animal*
History, Ancient
Models, Anatomic

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