Hynerpeton is a strange amphibian from the Devonian. It lived about 360 mya and was 5ft long.
Hynerpeton is featured in the first episode of the 2005 documentary series Walking With Monsters. It was seen fancifully and erroneously evolving from Cephalaspis, and then walking on land. One of the Hynerpeton meets a gruesome end when a predatory Hyneria fish ambushes it at the water's edge, shortly after a mating session with a female Hynerpeton. Its eggs evolved into those of Petrolacosaurus.