Phacops logani is limited to rocks of lower Devonian age. Can this fossils be considered an index fossil?Why?

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Phacops logani is limited to rocks of lower Devonian age. Can this fossils be considered an index fossil?Why?

Fossils Occurence and the Age of Rocks
Geologic time scale
A species of the trilobite
Trilobite fossils are widespread throughoutNorth America

2006-11-19 16:09:26 · 2 answers · asked by Nicole 5 in Science & Mathematics ➔ Earth Sciences & Geology

2 answers

Yes. If it only occurs during a certain time without being around for too long and it was widespread at that time then it would stand to reason that it would make a great index fossil because if you saw that fossil you would know the age of the rock. Also, if you didn't know what age a rock was you could go looking for this one fossil.

2006-11-19 16:29:51 · answer #1 · answered by Rod 1 · 3⤊ 0⤋

Phacops

2016-10-16 09:13:23 · answer #2 · answered by Anonymous · 0⤊ 0⤋