CNN

Rare fossils reveal the butterfly ‘tree of life’ over the past 100 million years

The world’s largest butterfly tree of life is helping researchers determine where the winged insects originated when they first appeared on Earth about 100 million years ago. During the age of the ...
WLWT

Rare fossils reveal the butterfly ‘tree of life’ over the past 100 million years

The world’s largest butterfly tree of life is helping researchers determine where the winged insects originated when they first appeared on Earth about 100 million years ago.Video above: Monarch ...