why are trilobites important as index fossils

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
why are trilobites important as index fossils	1.08	0.7	9478	58	45
why	0.23	0.2	3710	98	3
are	1.44	0.9	6622	35	3
trilobites	1.92	0.9	2965	33	10
important	0.92	0.1	6841	39	9
as	1.51	0.5	1724	54	2
index	1.2	1	972	8	5
fossils	0.68	0.5	6235	63	7

Keyword	CPC	PCC	Volume	Score
why are trilobites important as index fossils	1.75	0.8	7809	71
are trilobites index fossils	0.51	0.5	5224	90
why are trilobites important	1.3	0.6	9748	4
what are trilobites fossils	0.55	1	4875	50
how widespread are the trilobite fossils	0.2	0.9	3463	27
pictures of trilobite fossils	0.1	0.7	5178	58
images of trilobite fossils	0.44	0.2	7237	87
which best describes the fossil of trilobites	1.34	0.8	2100	21
are trilobite fossils common	0.55	0.2	2572	2
why were trilobites so successful	0.91	0.5	1626	69
trilobite fossil in rock	0.58	0.3	1103	11
large trilobite fossils for sale	0.12	0.6	3689	69
trilobite fossils for sale	1.51	0.9	3482	47
what did trilobites do	1.87	0.6	3623	29
where to find trilobite fossils	1.84	0.9	5869	55
facts about the trilobite	0.32	0.5	4074	77
the fossil trilobite was originally	1.8	1	588	58
trilobite fossil with human footprint	1.04	0.8	117	53