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Stratigraphy is the study of rock strata and their intrepretation in term of absolute or relative age.

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Why are there unnamed Cambrian Stages?

What is it about Stages 2,3,4, and 10 (as well as Series 2) in the Cambrian Period that has left solely them unnamed? Will this be resolved in time, or is it a relic of the historical naming process, …
Hector Hawkins's user avatar