Evolution: Fossils reveal butterflies' history

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.

Butterflies evolved from moths about 100 million years ago in North America : NPR

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Fossil Moths Reveal Their True Colors

A Powder snow Butterfly

Oldest butterfly fossils ever discovered – DW – 01/11/2018

Butterflies at that awkward age

Moth Fossils Older Than Flowers Were Shaped By Climate Change

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Fossils reveal butterfly 'tree of life' and origins

Butterflies in the Time of Dinosaurs, with Nary a Flower in Sight - Scientific American Blog Network

Evolution: Fossils reveal butterflies' history

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Fossil evidence reveals butterflies and moths lived 50m years earlier than thought, Zoology

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Genetic secrets of the monarch butterfly revealed