Is the lack of legs a primitive characteristic for amphibians or a later amphibian adaptation?

Here is the correct answer of the given question above. The lack of legs is a primitive characteristic for amphibians. The first amphibians to spend a significant part of their life on land most likely evolved from lobe-finned fishes. Lobe-finned fishes ancestral to amphibians had a bone structure within their fins that worked as legs that could walk on land. Hope this is the answer that you are looking for.

Ithink the dna sequences may vary but the amino acid sequences are identical.