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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Gurmeet Singh posted an Question
December 21, 2020 • 01:19 am
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30 points
30 points
- IIT JAM
- Geology (GG)
Which one is an index fossil? b. natiloids a. trilobite gastropods d. bivalves (bhu-2015
Which one is an index fossil? B. Natiloids A. Trilobite Gastropods D. Bivalves (BHU-2015
2 Answer(s)
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Rahul kumar
Yes, but in comparison with other fossil groups (Brachiopoda, Bivalve and Gastropods), the time range of trilobites is very narrow. So, the most probable answer should be trilobites.
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Rahul kumar Best Answer
Answer: Trilobites Index fossils should have narrow geological time range and wide geographical distribution. Trilobites appeared during Cambrian and extinct in Permian and hence work as a good index fossils for Paleozoic Era.
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but range is enough large - 605-245 interwal
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Yes, but in comparison with other fossil groups (Brachiopoda, Bivalves and Gastropods), time range of trilobites is very narrow. So, the most probable answer should be trilobites.
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Rahul kumar
Yes, but in comparison with other fossil groups (Brachiopoda, Bivalves and Gastropods), time range of trilobites is very narrow. So, the most probable answer should be trilobites.