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Late Ordovician rugose corals of the northern Sierra Nevada, California

  • Robert J. Elias (a1), A. W. Potter (a2) and Rodney Watkins (a3)

Extract

The shoo fly Complex of Late Devonian and older Paleozoic age is a regionally extensive rock assemblage in the northern Sierra Nevada of northern California. It consists chiefly of a coherent unit of phyllite, quartzose sandstone, and chert, and a melange unit (Hannah and Moores, 1986). Several limestone lenses in the Taylorsville area comprise the Montgomery Limestone (Diller, 1892, 1908; McMath, 1958; Figure 1). The Montgomery was long considered to be Silurian, largely on the basis of corals, brachiopods, and cephalopods (Diller, 1892, 1908; McMath, 1958; Berry and Boucot, 1970; Merriam, 1972). However, recent analyses of the biota indicate an Ashgill (middle Maysvillian–Gamachian) age (Boucot and Potter, 1977; Harris, personal commun. cited in Hannah and Moores, 1986, p. 790; Potter et al., 1990b; present study).

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Elias, R. J. 1982. Latest Ordovician solitary rugose corals of eastern North America. Bulletins of American Paleontology, 81(314), 116 p.
Elias, R. J. 1989. Extinctions and origins of solitary rugose corals, latest Ordovician to earliest Silurian in North America, p. 319326. In Jell, P. A. and Pickett, J. W. (eds.), Fossil Cnidaria 5: Proceedings of the Fifth International Symposium on Fossil Cnidaria including Archaeocyatha and Spongiomorphs held in Brisbane, Queensland, Australia, 25-29 July 1988. Association of Australasian Palaeontologists, Memoir 8.
Elias, R. J., and Potter, A. W. 1984. Late Ordovician solitary rugose corals of the eastern Klamath Mountains, northern California. Journal of Paleontology, 58:12031214.
Hannah, J. L., and Moores, E. M. 1986. Age relationships and depositional environments of Paleozoic strata, northern Sierra Nevada, California. Geological Society of America Bulletin, 97:787797.
McMath, V. E. 1958. The geology of the Taylorsville area, Plumas County, California. Unpubl. Ph.D. dissertation, University of California, Los Angeles, 199 p.
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Potter, A. W. 1990. Middle and Late Ordovician brachiopods from the eastern Klamath Mountains, northern California; Part 1. Palaeontographica, Abteilung A, 212:31158.
Potter, A. W., Boucot, A. J., Bergström, S. M., Blodgett, R. B., Dean, W. T., Flory, R. A., Ormiston, A. R., Pedder, A. E. H., Rigby, J. K., Rohr, D. M., and Savage, N. M. 1990a. Early Paleozoic stratigraphic, paleogeographic, and biogeographic relations of the eastern Klamath belt, northern California, p. 5774. In Harwood, D. S. and Miller, M. M. (eds.), Paleozoic and Early Mesozoic Paleogeographic Relations; Sierra Nevada, Klamath Mountains, and Related Terranes. Geological Society of America, Special Paper 255.
Potter, A. W., Watkins, R., Boucot, A. J., Elias, R. J., Flory, R. A., and Rigby, J. K. 1990b. Biogeography of the Upper Ordovician Montgomery Limestone, Shoo Fly Complex, northern Sierra Nevada, California, and comparisons of the Shoo Fly Complex and the Yreka terrane, p. 3341. In Harwood, D. S. and Miller, M. M. (eds.), Paleozoic and Early Mesozoic Paleogeographic Relations; Sierra Nevada, Klamath Mountains, and Related Terranes. Geological Society of America, Special Paper 255.

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Late Ordovician rugose corals of the northern Sierra Nevada, California

  • Robert J. Elias (a1), A. W. Potter (a2) and Rodney Watkins (a3)

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