Lower Cretaceous Pterosaur Trackways from China

To no one’s surprise the new Lower Cretaceous pterosaur tracks (Xing et  al. 2013) belong to a species close to Jidapterus (Fig. 1), with its big hand, narrow foot and short toes nearly all the same length except digit 1 is shorter. Interesting  that the claw marks did not impress.

Figure 1. Jidapterus compared to the new Lower Cretaceous pterosaur tracks. It's a pretty close match.

Figure 1. Jidapterus compared to the new Lower Cretaceous pterosaur tracks. It’s a pretty close match. Little pedal digit 5 makes a small impression. The unguals do not. 

I’m not sure about the relative lengths of the phalanges in manual digit 3. Sister taxa appear to go both ways (long middle phalanx and short) and the poor data I have is fuzzy at best for the tiny bones. If anyone has better data for any Lower Cretaceous Chinese azhdarchids, please send!

References
Xing L, Lockley MG, Piñuela L, Zhang J-P, Klein H, Li D-Q, Wang F-P 2013. Pterosaur trackways from the Lower Cretaceous Jiaguan Formation (Barremian–Albian) of Qijiang, Southwest China. Palaeo 661. doi: 10.1016/j.palaeo.2013.09.003

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