Abstract

During the course of field work in the Guadalupe Mountains of New Mexico and in certain parts of the Apache Mountains of West Texas, a variety of Permian calcareous algae were found. Thin-section examination of selected specimens from critical localities in these areas reveals many representative genera and species. One new genus and species are here presented together with descriptions of the most abundant and best preserved algal forms in the collection examined. Probable algal growths of pseudo-pisolitic character, which occur intimately associated with other algae, are also discussed.

The structures and relationships of the algae themselves, together with the presence of numerous associated organisms in the fossiliferous beds, facilitate reconstruction of the ecological conditions which apparently existed on and about the reefs during their construction.

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