It is the oldest known tetrapod. It was the first animal that had the bone structure needed to walk out of the water. A structure, perfected, was the basis for all other tetrapods (amphibians, reptiles, mammals and birds).
How was this prehistoric animal?
Similar to Ichthyostega, no more than a meter in length and its legs were 8 fingers. And like Tiktaalik, the Acanthostega had a disembodied skull that could move while the body ... Unlike fish.
Like early amphibians, the first ones out of the water, his breathing was a simple combination of lungs and gills.
This evolution firstborn old, lived in the shallow waters of the Devonian, 370-360 million years ago.
|A curious animal right?|