Definition of Index fossil

1. 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.

Exact synonyms: Guide Fossil
Generic synonyms: Fossil

Definition of Index fossil

1. Noun. Any ancient remains of a plant or animal that lived during a specific geological period and that can be used to date the containing rocks. ¹

¹ Source: wiktionary.com

Lexicographical Neighbors of Index Fossil

indevours
indevout
indew
indewed
indewing
indews
index's
index ametropia
index card
index cards
index case
index extensor muscle
index finger
index fingers
index fossil (current term)
index fossils
index fund
index hypermetropia
index myopia
index number
index of refraction
index register
index rerum
index term
index verborum
indexability
indexable
indexal
indexation

Literary usage of Index fossil

Below you will find example usage of this term as found in modern and/or classical literature:

1. Geological Magazine by Henry Woodward (1906)
"index-fossil of a zone must be distributed "all through its zone," and what he means by this expression. I am sure that he does not expect to find the ..."

2. Proceedings of the Geologists' Association by Geologists' Association (1908)
"Much loose material and shortness of time precluded careful working, but examples of the index fossil were found. The writer has also found Conn/its ..."

3. The Cretaceous Rocks of Britain by Alfred John Jukes-Browne, William Hill (1903)
"Further north, however, it ranges downward to the base of the Chalk, and consequently ceases to be of any value as an index-fossil. In Dorset and Devon, ..."

4. Proceedings of the Geologists' Association by Geologists' Association (1906)
"... as otherwise it would be difficult to avoid some confusion and overlapping, though the plan of varying the index fossil seems to answer in the Chalk. ..."

5. Technology Review by Massachusetts Institute of Technology Association of Class Secretaries, Massachusetts Institute of Technology Alumni Association (1908)
"These collections fill a gap in the index fossil series, and also give material for research to graduate or fifth- year students. ..."

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