Skip to Main Content


The paleontologic criteria which define the base and top of the proposed stages and their component zones will be discussed in the pages to follow. The dating of the strata is accomplished (1) by association with megafossil or foraminiferal horizons whose age has been established, or (2) by inference from superpositional position with horizons whose age has been established as in (1).

You do not currently have access to this chapter.

Figures & Tables





Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal