Prehistoric fish

Devonian Fish Series #11: Fish of the Hunsruck slate, Germany (Emsian): The Heterostraci Drepanaspis and the placoderms Lunaspis, Gemuendina, Stensioella, and Pseudopetalichthys

Why all the Shark Week mania over megalodon? Why two other sharks blow it out of the water. Making the case for the awesome Edestus & the incredible-but-real Helicoprion. Take that, Discovery Channel.

Dunkleosteus (meaning "Dunkle's bone") was a large placoderm fish that lived in the late Devonian period, about 382–358 million years ago.[1] It has been estimated to have grew to 4.1 metres (12.3 feet), and was the top predator of its time and the Paleozoic era as a whole. Dunkleosteus belongs to the Placodermi, a large, paraphyletic clade of armor-plated fishes likely ancestral to all living gnathostomes. More precisely, it was an arthodire, part of a clade which possessed skulls that had…

During the Sheinwoodian Age (Early Wenlock, Early Silurian), fish were still mostly jawless. Represented here: Lasanius, Birkenia, Ciderius, Lanarkia, Shielia, Archipelepis, Pezopallichthys, Athenaegis, Ateleaspis , Shuyu, Meishanaspis, Changxingaspis by Nobumichi Tamura

Starting with the Devonian series. Here is a sampling of early Devonian fish from the MacKenzie mountains, Northwest Territories, Canada. Promesacanthus, Brochoadmones, Canadapteraspis, Lepidaspis, Nahanniaspis, Sphenonectris, Furcacauda, Superciliaspis by Nobumichi Tamura