👉 Displatynychus is a genus of extinct mammals from the Late Cretaceous period, around 65 million years ago, which lived in what are now Europe and Asia. They were known for their distinctive flat skull with long necks and large ears that resembled those of a bird or fish. Displatynychus had a short lifespan due to their small size and lack of natural predators, leading to their mass extinction during the Late Cretaceous period.