A hitherto unknown Devonian fauna from the Rocky Mountain province was discovered in the spring of 1942, by L. R. Laudon and A. L. Bowsher, as a by-product of their field research on the Mississippian stratigraphy of New Mexico. The locality of the new fauna is the Mockingbird Gap area, of the San Andres Mountains, in the southern-central part of the state.
Outstanding in the collection, which was kindly turned over to the writer for study, are seven excellently preserved specimens of Paraspirifer cf. acuminatus. The collection also contains several chert fragments, with numerous specimens of Tentaculites standing out...
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