Acanthostega

Acanthostega (meaning "spiny roof") is an extinct genus of stem-tetrapod, among the first vertebrate animals to have recognizable limbs. It appeared in the late Devonian period (Famennian age) about 365 million years ago, and was anatomically intermediate between lobe-finned fishes and those that were fully capable of coming onto land.[1]
Category:Animals
Category:Creatures
Category:Ichthyostegalia
Category:Devonian Greenland
Category:Devonian vertebrates of North America
Category:Paleozoic amphibians of north america
Category:Amphibians
Category:Paleontology in Greenland
Category:Stegocephalians
Category:Transitional fossils
Category:Fossil taxa described in 1952