Fossils reveal butterfly 'tree of life' and origins

The unresolved phylogenomic tree of butterflies and moths (Lepidoptera): Assessing the potential causes and consequences - Rota - 2022 - Systematic Entomology - Wiley Online Library

Butterfly Life Cycle – For Educators

Scientists find where butterflies first evolved

Genome-wide macroevolutionary signatures of key innovations in butterflies colonizing new host plants

Florissant Fossil Beds National Monument (U.S. National Park Service)

Meet the butterflies from 200 million years ago

See the spectacular fossils from a newly discovered prehistoric rainforest

Butterflies and Beyond Smithsonian National Museum of Natural History

Lepidopteran - Metamorphosis, Wings, Pollination

Smithsonian Insider – Remarkable butterfly look-alike lived 50 million years before butterflies appeared