A 310-million-year-old horseshoe crab’s brain was preserved in clay, thanks to an uncommon fossilization process that protected the fragile neural tissues.
Continue reading: A ‘one-in-a-million’ fossilized horseshoe crab brain was discovered

A 310-million-year-old horseshoe crab’s brain was preserved in clay, thanks to an uncommon fossilization process that protected the fragile neural tissues.
Continue reading: A ‘one-in-a-million’ fossilized horseshoe crab brain was discovered