Ancient 4-Limbed Creatures Were Too Young for Trip Ashore

The finding took researchers by surprise, as they thought that the fossil specimens of the animal, known as Acanthostega, belonged to water-dwelling adults, not young'uns. Regardless, the discovery is painting a more detailed picture of Acanthostega. "Understanding the life history of these early tetrapods, which are iconic transitional forms between fishes and land animals, is of great interest for studying the tetrapod move to land," said lead study researcher Sophie Sanchez, who researches th