Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun guide_fossil

1 sense of guide fossil

Sense 1
index fossil, guide fossil -- (a fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found)
       => fossil -- (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)