Fluorite deposits of the Quinn Canyon Range, Nevada

1969 ◽  
Keyword(s):  
1993 ◽  
Vol 67 (6) ◽  
pp. 935-945 ◽  
Author(s):  
Edward C. Wilson ◽  
Ralph L. Langenheim

Rugose and tabulate corals from the Lower Permian (Wolfcampian) part of the Bird Spring Group in Arrow Canyon, Arrow Canyon Range, Clark County, Nevada, comprise eight species in eight genera. Stylastraea rowetti n. sp. is the first unequivocal record of this genus west of Texas in North America. Heritschiella girtyi, the only endemic North American waagenophyllid genus and species, is recorded outside Kansas for the first time. Paraheritschioides stevensi formerly was known only from northern California. The other species also occur elsewhere in the Permian of Nevada and nearby. This southeast Nevada shelf area has the first known intermixture of corals from the Durhaminid Coral Province and subprovinces of far western North America and the Cyathaxonid Coral Province of middle and southwestern North America.


1999 ◽  
Vol 107 (6) ◽  
pp. 659-681 ◽  
Author(s):  
Stewart Wills ◽  
Mark H. Anders

1988 ◽  
Vol 62 (6) ◽  
pp. 868-879 ◽  
Author(s):  
Douglas H. Erwin

Glyptospira is a small, highly ornamented, turriteliform gastropod found in the Lower Permian of the southwestern United States. Two species, Glyptospira cristulata Chronic and G. arelela Plas, have been previously described from the Kaibab Formation, Arizona, and the Bird Spring Group, Arrow Canyon Range, Nevada, respectively. The genus is most diverse in the Wolfcampian Hueco Formation of West Texas and southern New Mexico and the Colina Limestone of southeastern Arizona. This contribution describes four new species of Glyptospira from the southwestern United States: two bicarinate forms, G. huecoensis and G. turrita, and two tricarinate forms, G. tricostata and G. cingulata.A phylogenetic analysis of all known species of Glyptospira was performed using qualitative characters for which transformation series could be established and two quantitative characters for which transformation series could not be established. The phylogenetic results provided the best available hypothesis of the evolutionary history of the genus.


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