4 hours ago by Marie Daniels
A study of the jaws of one of the earliest known limbed vertebrates shows the species still fed underwater, not on land.

Tetrapods - the four-legged limbed vertebrates - evolved from fish and include today's amphibians, reptiles, birds and mammals.
No comments:
Post a Comment
You only need to enter your comment once! Comments will appear once they have been moderated. This is so as to stop the would-be comedian who has been spamming the comments here with inane and often offensive remarks. You know who you are!