Researchers in Brazil have unearthed a new species of flying reptile, Caiuajara dobruskii from the Cretaceous Period.
The odd-looking creature, described in a 2014 PLOS ONE paper, sported a bony crest on its head that looked like butterfly wings. The crests changed in size an orientation as juveniles (white) grew into adulthood (red).
The species was identified from a bone bed about 213 square feet (20 square meters) in area, which contained fragments from potentially hundreds of individuals. The aggregation suggests pterosaurs were social animals that flocked together.
Several leg bones from animals of various sizes were unearthed. Bones from below the head didn't change that much in size as the animals grew, suggesting they could have flown at a very young age.
The lower jaw bones from juveniles, adolescents and adults were unearthed.
Some of the ancient reptile skeletons were partially intact and had their 3D structure preserved.
Fragments of head bones from an adult, shown how they would have appeared on the animal.
Some of the head bones from the ancient reptile.
The ancient creatures probably lived around a desert oasis 80 million years ago. As they died, the bones were carried into the lake by desert storms and preserved indefinitely. The different stages of degradation probably reflect how long the animals were exposed to the elements before being submerged, the authors wrote in the paper.