🧬 Life
▪️Mammals differentiate from reptiles ∓ 300 MYA.
▪️X-linked then Y-linked chromosomes evolve ∓ 301 MYA.
▪️Coal Forests 320 MYA
▪️Synapsids 325 MYA
▪️Giant amphibians 340 MYA
⚡️Major Extinction Spasms
Carboniferous Period Event 350 MYA
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