Recent announcement of 110 million-year-old pterosaur tracks by Raul Frank Gio Argáez, researcher at the Institute of Marine Sciences and Limnolog , National Autonomous University of Mexico (UNAM ) made the news here.
Unfortunately all pterosaur tracks that I am aware of have four toes.
Here (Fig. 1) the fourth toe appears to be missing, suggesting a misidentification. Looks more like a theropod track. If anyone can see the fourth toe, please let me know.