Question #84eff

1 Answer
Nov 26, 2017

All sedimentary rocks are able to preserve fossils.

Explanation:

Limestone has the most types of fossils found in its sedimentary layers. Calcium carbonate is necessary as "cement " for harder sedimentary layers to form. As limestone is made of Calcium carbonate limestone layers harden quickly preserving fossils.
Some of the best preserved fossils are found in limestone layers.

Sandstone often has fossils of shell fish, shark teeth, and other marine costal organisms.

Shale or mudstone. can hold fossil footprints, and impressions left in the mud and then quickly covered.

All sedimentary layers have been found to preserve fossils that give evidence of earth history.