Around 540 million years ago, Earth’s biosphere underwent a pivotal transformation, shifting from a microbe-dominated world to one teeming with animal life, as nearly all major animal phyla appeared abruptly […]
Burgess Shale
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Unusual Red Rocks In Australia Are Rewriting The Rules On Exceptional Fossil Sites
Highly detailed fossils are typically found in shale or other fine-grained sedimentary rocks. These ones? They’re made of iron.