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Latest Cal Nat Blog for July 25th, 2022

Thinking in Deep Time

“ Biodiversity starts in the distant past and it points toward the future.” — Frans Lanting The earliest vertebrates, our distant ancestors, animals with backbones or backbone-like structures were aquatic fish-like creatures, dating back to the Cambrian, some 500 million years ago. True fish came a bit later. The Silurian period, some 400 million years...