Dimorphodon

Dimorphodon macronyx

Dimorphodon is a genus of medium-sized pterosaur that lived in Europe during the early Jurassic Period (about 201-191 million years ago). It was named by paleontologist Richard Owen in 1859. Dimorphodon means "two-form tooth", derived from the Greek di- (δι-) meaning 'two', morphḗ (μορφή) meaning 'shape' and odṓn (ὀδών) meaning 'tooth', referring to the fact that it had two distinct types of teeth in its jaws – which is comparatively rare among reptiles