What was the first rodent on earth?

Answer 1

The first rodent on Earth is believed to be Mymecophaga, which lived around 56 million years ago during the Paleocene epoch. This early rodent is thought to have evolved from a group of small, primitive mammals. Rodents have since diversified into a wide variety of species, becoming one of the most successful orders of mammals. The evolutionary lineage of rodents is extensive, leading to the diverse families we see today.