Panama land Bridge connecting the central amarica to south amarica how long has it existed

hear u go i think this is right..

Explanation: there's new geologic evidence that the narrow Panama land bridge emerged from the sea 12 million to 15 million years ago, much earlier than thought. This early uplift wreaks havoc with prevailing ideas, which suggest this strip of land established itself just 3 million years ago.

it is

a

asked for and recieved from the united states