Forefathers of what kind of fish are thought to be the earliest vertebrates?
hagfish Pelycosaur fish angiosperm adult Therapsids marine aquatic
A B C D E F G H
Property of ancestors and forefathers can only be legally inherited by sons.
The forefathers of hagfish are thought to have been the earliest vertebrates.
Forefathers of what kind of fish are thought to be the earliest vertebrates? (A) hagfish (B) Pelycosaur (C) fish (D) angiosperm (E) adult (F) Therapsids (G) marine (H) aquatic