Are these key fossils from land or lagoon? ancient fossilsEdiacaran fossilsGregory Retallackinvertebrate fossils
Ancient fossils, which scientists have considered ancestors of early marine life, are instead remnants of land-dwelling lichen or other microbial colonies, a geologist proposes.
Ediacaran fossils date to 542-635 million years ago and have been considered fossil jellyfish, worms, and sea pens. However, they are preserved in ways distinct from marine invertebrate fossils, says Gregory Retallack, a geology professor at the University of Oregon.
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Photo credit: Greg Retallack/University of OregonPosted by Futurity