Found these oddly flat rocks, not sure if they're fossils? Thank

Fossil found on P.E.I. older than first dinosaur to have walked the Earth

Can Anyone Tell Me If This Is Fossilized Bone, Or Just A Cool Rock?

Found these oddly flat rocks, not sure if they're fossils? Thank you. : r/fossilid

I Could Not Believe What I Was Seeing” – Missing Evolution Puzzle Piece Discovered in 130-Million-Year-Old Rocks

Space dust fossils are providing a new window onto Earth's past

How Are Planets Made? New Theories Are Taking Shape.

I found this weird rock in the creek by my house. It's really cool looking, but I have no idea what kind it is other than the crystals growing on it. Who

Fossilized bone or odd rock? - Fossil ID - The Fossil Forum

Dinosaur bones shimmering with opal reveal a new species

Found these oddly flat rocks, not sure if they're fossils? Thank you. : r/fossilid

This fossil is one of the world's earliest animals, according to fat molecules preserved for a half-billion years, Science