Zhenyuanopterus

Zhenyuanopterus is a genus of pterosaur which is known from Lower Cretaceous (early Aptian) Yixian Formation of Liaoning, China.

Paleoecology
It has been suggested that Zhenyuanopterus foraged while swimming, trapping prey within its needle-like teeth, a method similar to that of modern Platanista river dolphins, which display a similar dentition.[2]

It has been often suggested that this animal is actually the adult of its close relative Boreopterus, which is known to be a juvenile.