The frequent eruptions helped to preserve fossils and evidence of animal life.

It is similar to the Solnhofen in that it preserves fossils of land-living flora and fauna alongside marine organisms.

The walls preserved fossils of spirits long dead.

It is composed of claystones, siltstones, and sandstones that preserve numerous fossils of land mammals, including early hominin species.

Due to their young age and igneous geology they preserve very few fossils.

It preserves fossils of many terrestrial vertebrates from the Triassic, including some of the earliest archosaurs.

The Cretaceous Dakota Formation of the eastern part of the state preserved fossils of local dinosaurs.

Calcium carbonate can preserve fossils through permineralization.

Microbial mats help to preserve soft-bodied fossils by:

Beds that preserve fossils typically lack the radioactive elements needed for radiometric dating.