Bipedal or Quadrupedal Page 1 |
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The problem lies in that the position of the wing membrane attachments; as they are not certain. Some believe that the membrane is incorporated into the hind limbs much like a bat. Others believe that hind limbs were left completely free and this enabled the pterosaur to walk upright. The impressions of preserved membranes are frustratingly inconclusive. |
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![]() © Patrick Lyons 1998. |