Definitions
There is 1 meaning of the phrase
Index Fossil.
Index Fossil - as a noun
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
Synonyms (Exact Relations)
guide fossilExample Sentences
"The presence of a specific index fossil can indicate a particular time period in geological history."
"The discovery of an index fossil can help in correlating different rock formations."
"By examining the index fossils found in a rock layer, scientists can estimate its age."
"The trilobite is often considered an important index fossil for the Cambrian Period."
"Ammonites are commonly used as index fossils due to their wide distribution and short evolutionary lifespan."
