The Oldest Fossils of Terrestrial Animals are Of

Question

The oldest fossils of terrestrial animals are of
A)spiders and millipedes.
B)insects and snakes.
C)mice and bats.
D)birds and mammals.

Accepted Answer

The oldest fossils of terrestrial animals are of spiders and millipedes. These fossils are from the Silurian period, which dates back to about 420 million years ago. Insects didn't appear until the later part of the Devonian period, while snakes, mice, bats, birds, and mammals are even more recent in the geological timescale.