THEORIES FOR LAND TRAVEL
The fish ultimately succeeded were those that developed features that made them better fishes.
are the group that eventually made evolutionary changes to what we now know as tetrapods.
there are two types:
when more tetrapods started to appear at 340 Ma
There was a branching of two groups
Amphibians - Laid unshelled eggs
mammals, dinosaurs, and reptiles laid amniotic eggs.
This is an evolutionary tree for the earliest tetrapods.
It starts out with the lobe-finned fish and then branches into two with amphibians branching off by itself to the left.