These 'Fossilized Brains' Might Not Be Brains At All

The transcript discusses the discovery of fossilized tissues in ancient arthropods, initially thought to be brain and nervous system tissues. A new study suggests these are actually biofilms, challenging previous evolutionary hypotheses. The study of brine shrimp decay supports this biofilm theory. Additionally, a reevaluation of ichthyosaur fossils suggests they might have been larger than previously thought, potentially rivaling the blue whale as the largest animal ever.

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