Why do fossils of some dinasour's doesn't decompose?

Well, friend! The bones are technically mineral replacement fossils, like petrified wood. If you didn't know when petrified wood is formed there is NO actual wood in the fossil. It's replaced by minerals, and the same happens with bones! There isn't actually any bone in the dinosaur fossils, it's replaced by minerals! read more

Well, friend! The bones are technically mineral replacement fossils, like petrified wood. If you didn't know when petrified wood is formed there is NO actual wood in the fossil. read more

Bones do decay, but at a much slower rate than soft body tissue, like muscle, organs, and cartilage. The inside of the bone, which has blood vessels and marrow, will decay faster than the outside, which is made of minerals like calcium. read more

As it turns out, bones decay at varying rates, and some don’t decay at all! To properly understand the variability of bones in human and animal bodies, a bit of background on the process of decomposition can be quite helpful. read more