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Aerodynamic performance of the feathered dinosaur Microraptor and the evolution of feathered flight

Author

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  • Gareth Dyke

    (Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Waterfront Campus
    Institute for Life Sciences, University of Southampton)

  • Roeland de Kat

    (Engineering and the Environment, University of Southampton)

  • Colin Palmer

    (Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Waterfront Campus
    School of Earth Sciences, University of Bristol)

  • Jacques van der Kindere

    (Engineering and the Environment, University of Southampton)

  • Darren Naish

    (Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Waterfront Campus)

  • Bharathram Ganapathisubramani

    (Institute for Life Sciences, University of Southampton
    Engineering and the Environment, University of Southampton)

Abstract

Understanding the aerodynamic performance of feathered, non-avialan dinosaurs is critical to reconstructing the evolution of bird flight. Here we show that the Early Cretaceous five-winged paravian Microraptor is most stable when gliding at high-lift coefficients (low lift/drag ratios). Wind tunnel experiments and flight simulations show that sustaining a high-lift coefficient at the expense of high drag would have been the most efficient strategy for Microraptor when gliding from, and between, low elevations. Analyses also demonstrate that anatomically plausible changes in wing configuration and leg position would have made little difference to aerodynamic performance. Significant to the evolution of flight, we show that Microraptor did not require a sophisticated, ‘modern’ wing morphology to undertake effective glides. This is congruent with the fossil record and also with the hypothesis that symmetric ‘flight’ feathers first evolved in dinosaurs for non-aerodynamic functions, later being adapted to form lifting surfaces.

Suggested Citation

  • Gareth Dyke & Roeland de Kat & Colin Palmer & Jacques van der Kindere & Darren Naish & Bharathram Ganapathisubramani, 2013. "Aerodynamic performance of the feathered dinosaur Microraptor and the evolution of feathered flight," Nature Communications, Nature, vol. 4(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3489
    DOI: 10.1038/ncomms3489
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    Cited by:

    1. Alfio Alessandro Chiarenza & Anthony R Fiorillo & Ronald S Tykoski & Paul J McCarthy & Peter P Flaig & Dori L Contreras, 2020. "The first juvenile dromaeosaurid (Dinosauria: Theropoda) from Arctic Alaska," PLOS ONE, Public Library of Science, vol. 15(7), pages 1-30, July.

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