This might not be exactly straight forward, but they evolved when they needed to adapt to current changes in the world or current area that they live or occupy. -<3 Super Possum on GaiaOnline.com
a crocodile was the first to evolve
Yes they were.
Nonvascular plants
There is no animal to EVOLVE, but the closest animal to humans is the Chimpanzee.
So that way the animals would have plenty of food to eat
The first animal on the moon was Neil Armstrong, a human being.
The first animal phylum to evolve three germ layers was the Cnidaria. These germ layers are the ectoderm, endoderm, and mesoderm, found in more complex animals for the development of different structures and organs.
Dinosaurs
well over time the land animals change a little and they need to be underwater to live unlike their land animal ancestors
humans
Dinosaurs
Probably scorpions.