| Meaning | The remains (or an impression) of a plant or animal that existed in a past geological age and that has been excavated from the soil. |
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| Narrower | ammonite, ammonoid | One of the coiled chambered fossil shells of extinct mollusks |
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| belemnite | A conical calcareous fossil tapering to a point at one end and with a conical cavity at the other end containing (when unbroken) a small chambered phragmocone from the shell of any of numerous extinct cephalopods of the family Belemnitidae |
| fucoid | A fossilized cast or impression of algae of the order Fucales |
| index fossil, guide fossil | A fossil known to have lived in a particular geologic age that can be used to date the rock / rock layer in which it is found |
| microfossil | A fossil that must be studied microscopically |
| wormcast | fossil trail of a worm |
| Broader | remains | Any object that is left unused or still extant |
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| Spanish | fósiles, fósil, restos arqueológicos |
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| Catalan | fòssil, restes arqueològiques |
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| Adjectives | fossil | characteristic of a fossil |
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| fossiliferous | bearing or containing fossils |
| Nouns | fossilist | a specialist in paleontology |
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| Verbs | fossilize | convert to a fossil |
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