around 20 years

The first elephants came into existence after the wipe out of Dino's.

The first elephants were the Phiomia which had the beginnings of tusks and the trunk.

Then these Phiomia's changed into Dinothere which had upside-down tusks growing downward from its lower jaw.Otherwise it was much like an elephant.

Platybelodon had tusks in its lower jaw. It most likely used these to scoop up water plants.

The Mammoth was an enormous animal which often had a Shaggy coat.

The Mastodon had teeth up to 7 1/2 cm wide and 15cm long.

The mastodon then evolved into the elephants we have today

While is only a matter of opinion I would go with the Snakefish. U.S. Internal Secretary Gale Norton described the Snakefish as "something from a bad horror movie". This fish eats anything in its path, including its own young. It can live up to three days out of water, slithering across land like a snake. They have also been known to attack people in China who get too close to their nesting areas. Most snakefish are 2-3 feet long.

The first elephants came into existence after the wipe out of Dino's.

The first elephants were the Phiomia which had the beginnings of tusks and the trunk.

Then these Phiomia's changed into Dinothere which had upside-down tusks growing downward from its lower jaw.Otherwise it was much like an elephant.

Platybelodon had tusks in its lower jaw. It most likely used these to scoop up water plants.

The Mammoth was an enormous animal which often had a Shaggy coat.

The Mastodon had teeth up to 7 1/2 cm wide and 15cm long.

The mastodon then evolved into the elephants we have today