Limb disparity and wing shape in pterosaurs

@article{Dyke2006LimbDA,
  title={Limb disparity and wing shape in pterosaurs},
  author={Gareth J. Dyke and Robert L. Nudds and Jeremy Rayner},
  journal={Journal of Evolutionary Biology},
  year={2006},
  volume={19}
}
The limb proportions of the extinct flying pterosaurs were clearly distinct from their living counterparts, birds and bats. Within pterosaurs, however, we show that further differences in limb proportions exist between the two main groups: the clade of short‐tailed Pterodactyloidea and the paraphyletic clades of long‐tailed rhamphorhynchoids. The hindlimb to forelimb ratios of rhamphorhynchoid pterosaurs are similar to that seen in bats, whereas those of pterodactyloids are much higher. Such a… 
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References

SHOWING 1-10 OF 19 REFERENCES
Sordes pilosus and the nature of the pterosaur flight apparatus
IT is now generally accepted that pterosaurs, Mesozoic reptiles, were true fliers, but the nature of their flight apparatus is still much disputed. Evidence has been presented in favour of bird-like
Forelimb proportions and the evolutionary radiation of Neornithes
  • R. Nudds, G. Dyke, J. Rayner
  • Biology, Environmental Science
    Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 2004
TLDR
It is suggested that with further analysis and data collection the relationships between flight behaviour, ecology and BI can be determined and may provide a useful tool for characterizing the ecology of fossil birds.
Bipedalism, flight, and the evolution of theropod locomotor diversity
TLDR
This work addressed the hypothesis that bird hind limbs should be more disparate than those of non-avian theropods by visualizing one aspect of limb design, the proportions of the three main segments, using ternary diagrams, and shows that avian hind limb proportions are much more disparate.
On the phylogeny and evolutionary history of pterosaurs
  • D. Unwin
  • Biology
    Geological Society, London, Special Publications
  • 2003
TLDR
The pattern of pterosaur evolution suggested by the results of this analysis is broadly similar to traditional ideas, but has greater resolution, more complexity and reveals several previously unrecognized ‘events’.
Pterosaur phylogeny and comments on the evolutionary history of the group
  • A. Kellner
  • Biology
    Geological Society, London, Special Publications
  • 2003
TLDR
This study suggests that the most primitive taxon is the Anurognathidae, followed by Sordes and all remaining pterosaurs, and the hypothesis of rhamphorhynchoid paraphyly is confirmed, with the RhamphorHynchidae more closely related to the Pterodactyloidea than to more basal forms.
Reptilia
  • J. Young
  • Geology, Environmental Science
    Transactions of the Glasgow Geological Society
  • 1871
The only other class remaining to be noticed in this paper is the Reptilia, remains of which have only been identified as such during the last few years. One specimen from the Carluke coal field,
Pterosaurs: back to the traditional model?
  • Unwin
  • Biology
    Trends in ecology & evolution
  • 1999
New specimens of Pterosauria (Reptilia) with soft parts with implications for pterosaurian anatomy and locomotion
Abstract New specimens of pterosaurs with soft-part preservation from the Solnhofen Lithographic Limestone (S Germany) and the Crato Formation (northeastern Brazil) yield hitherto unknown and
Tuning of Strouhal number for high propulsive efficiency accurately predicts how wingbeat frequency and stroke amplitude relate and scale with size and flight speed in birds
TLDR
It is shown that St is a simple and accurate predictor of wingbeat frequency in birds, explaining 90% of the observed variance in a sample of 60 bird species and tuned by natural selection for high aerodynamic efficiency.
Biometry: The Principles and Practice of Statistics in Biological Research
TLDR
This chapter discusses statistical power and sample size in the Analysis of Variance, as well as meta-Analysis and Miscellaneous Methods, and some of the methods used in meta-analysis.
...
...