The economic importance of additional oil and gas reserves by deeper drilling, from the Permian and from older Paleozoic rocks in West Texas, has prompted the writer to re-examine and to study the Paleozoic outcrops in West Texas and in southeastern New Mexico. These studies as planned, relate to geological factors involving stratigraphy, stratigraphical relationships, and paleontology.

On one of such surveys in August, 1944, the writer accompanied by R. V. Hollingsworth studied outcrops of the middle and the upper formations of the Delaware Mountain group that are excellently exposed in the Delaware Mountains, east and southeast of, and adjacent...

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