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BUL 025

Microfloral Diagnosis of the Cretaceous-Tertiary Boundary, Central Alberta

A new approach to classification, based mainly on details of wall stratification, is used in discriminating among eight new species of Azolla.Three microfloral 'zones' defined mainly by the distribution of vertically restricted species have been ... Show Abstract

Snead, R.G.  1969-01-01

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