What do ancathostega have four of?
Eggs feet Wings alveoli Lungs ovaries rings Limbs
A B C D E F G H
Ancathostega is one of the earliest tetrapods found, and by far the most complete.
Ancathostegs have four limbs
What do ancathostega have four of? (A) Eggs (B) feet (C) Wings (D) alveoli (E) Lungs (F) ovaries (G) rings (H) Limbs