Adjective
Containing or composed of fossils.
Source: Webster's dictionaryfossiliferous strata Source: Internet
Darwin also pondered the sudden appearance of many groups (i.e. phyla ) in the oldest known Cambrian fossiliferous strata. Source: Internet
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. Source: Internet
Third, words lifted from specialized fields, as "fossiliferous". Source: Internet