What is the last common ancestor of the bald eagle and human?
I am doing a report on the bald eagle and need to know some of the evolutionary facts of the bird. i cannot find the answers i am looking for so if anyone can help. just an animal name is fine
- ob1knobLv 710 years agoFavorite Answer
As a bird, bald eagle is basically a dinosaur, while human, a mammal descends from therapsids ("mammal-like reptiles").
The 2 branches of amniotes split about 300 million years ago in the Carboniferous.
- synapsids which include therapsids (and so, mammals and humans)
- sauropsids (crocodiles, snakes, turtles, dinosaurs including birds and ... bald eagle)
So our MRCA with bald eagle was as lizard-like reptile from the carboniferous.
it could have looked like something between this:
http://en.wikipedia.org/wiki/Archaeothyris (306 m.y. - mammals side)
http://en.wikipedia.org/wiki/Hylonomus (312 m.y. - birds side)
- AvaLv 410 years ago
- TowandaLv 710 years ago
I'm thinking in terms of a crinoid . . .who do you think really knows?
- 5 years ago