Are fossils more often found in shale, limestone or sandstone?

As a general rule limestones are the most fosseliferous. Many limestones are created by biological processes and are in many cases the rock resulting from these processes. They frequently contain shells or shell fragments, and fossils of coral and similar fauna which have calcareous skeletons. read more

According to what rocks it can be found in sedimentary rocks more than in others.So limestone and sandstone and shale are of sedimentary origins. Now,according to shale,it is made by mud and clay which combine with other particles ane harden the shale.Fossils are covered from this. read more

Fossils are most common in limestone and least common in sandstone. Fossils form more often in shale than in sandstone but less often then in limestone. This is due to how they are formed: limestone is made of the shells of dead organisms, shale is formed from fine-grained mud sediment and sandstone forms from sand. read more

Since sandstone is a coarser material than shale or limestone, fossils found in them do not usually show as many details as fossils in shale and limestone. Sandstone rarely contains delicate fossils. Sandstone forms in a wide range of environments, including beaches, oceans, sand bars, dunes, rivers, deltas, deserts and flood plains. read more