Abstract
Re-evaluation of samples from several Texas localities over the Austin Chalk-Taylor Clay boundary for planktic Foraminifera, and comparison with recent work on European and North African successions confirms the general correlation of the Texan formations with the European Stage succession. The sedimentary hiatus indicated by Pessagno (1967) does not appear to be present: the Late Santonian-Early Campanian zonal marker Globigerinita elevata (Brotzen) occurs in the Lower Taylor Clay associated with late representatives of Marginotruncana. The Lower Taylor Clay may belong to the Late Santonian in some localities.
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