fossiliferous
Adjective
Meaning
Containing or composed of fossils.
Source: Webster's dictionaryExamples
fossiliferous strata
Darwin also pondered the sudden appearance of many groups (i.e. phyla ) in the oldest known Cambrian fossiliferous strata.
The totality of fossils, both discovered and undiscovered, and their placement in fossiliferous (fossil-containing) rock formations and sedimentary layers ( strata ) is known as the fossil record.
Third, words lifted from specialized fields, as "fossiliferous".