Question

A scientist studied four fossils of a marine mammal dating back to 50 million years, 45 million years, 40 million years, and 30 million years ago. Which fossil is most similar to the present-day mammal?

30 million years
40 million years
45 million years
50 million years

Answer 1

it should be 30 million years ago.

Step-by-step explanation:

Answer 2

The 30 million years ago, because it's the closest one to us, wait is there a picture to it ?