- 活化石 huóhuàshí living fossilAn animal or plant species that has remained essentially unchanged from earlier geologic times and whose close relatives are usually extinct
- 木化石 mùhuàshí petrified woodFossilized wood that has turned into stone over time while retaining its original structure; also called [[石化木|石化木|shi2 hua4 mu4]] or [[木变石|木變石|mu4 bian4 shi2]].
- 昌化石 chānghuàshí Changhua stoneA precious stone material from Changhua, Zhejiang used for seals and stone carving; it is one of the four famous seal stones of China, with the bloodstone [[鸡血石|雞血石|ji1 xue4 shi2]] being its most famous variety.
- 粪化石 fènhuàshí coprolitefossilized feces; coprolite
- 化石群 huàshíqún fossil assemblagea group of fossils found together in the same geological layer
- 化石猿类 huàshíyuánlèi fossil apeextinct primates belonging to the ape family that are preserved in the fossil record
- 化石燃料 huàshíránliào fossil fuel
- 化石类人猿 huàshílèirényuán fossil apefossilized great ape or ancient hominoid, typically referring to extinct primate species related to the ancestors of modern humans
- 植物化石 zhíwùhuàshí fossil planta plant that has been preserved in rock or as a fossil; also referred to as a phytolite
- 化石学 huàshíxué paleontologythe study of life in prehistoric times through the analysis of plant and animal fossils
- 液化石油气 yèhuàshíyóuqì liquefied petroleum gasA colorless and flammable liquid fuel refined from crude oil or natural gas; commonly used for heating, cooking, or as vehicle fuel
- 松化石 sōnghuàshí turquoiseturquoise gemstone; also written [[松石|松石|song1 shi2]]