Field Notebook: Oklahoma, Texas 1922
Page 79
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Transcription
among them not common are Phymatostroma cephal, and many fragments of manor bedded lll genus that must have been ten with a mile in length. Richmond fossils in the Circle. Taff says continue down to 300 feet. Conformably but rather sharply follows upwards? even 300 feet of Aylran shale that near the bottom are chocolate colored and lamar ocellated limestone. Near the base of this Aylran occur in very large space Heliographus and rare Climacograptus. There are shells green ten foot of Shales, and then occurs a thin chocolate colored impure limestone that has the same graptolites and an abundance of Lingulids, and some rare small Schizocrania and a large Lingula. Hither the shucks are very good of shale. See these four lots of fossils. Which refers these Aylran Shales to the Ordovician but they are clearly better referred to the Richmondian, as as soon the upper 300 feet of the Circle. The Richmondian is here therefore about 600 feet thick.