Early Middle Devonian conodont faunas (Eifelian, costatus-kockelianus zones) from the Roberts Mountains and adjacent areas in central Nevada


Authors: Vodrážková S, Klapper G, Murphy MA

Published in: Bulletin of Geosciences, volume 86, issue 4; pages: 737 - 764; Received 27 June 2011; Accepted in revised form 18 August 2011; Online 9 November 2011

Keywords: Middle Devonian, conodont biostratigraphy, Nevada, Roberts Mountains,

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Conodont faunas from the uppermost part of the Coils Creek Member of the McColley Canyon Formation and primarily the lower part of the Denay Limestone (Middle Devonian, Eifelian) from the northern Roberts Mountains and adjacent central Nevada areas are the subjects of the present study. Four new species from the Denay Limestone (Eifelian, costatus and australis zones) are described herein: Polygnathus salixensis sp. nov., P. holynensis sp. nov., P. robertsensis sp. nov. and P. damelei sp. nov. These species add to the biostratigraphic resolution and characterization of the costatus and australis zones. The basal Denay Limestone in the northern Roberts Mountains is in the upper part of the costatus Zone, which directly overlies the upper Coils Creek Member in the serotinus Zone. Thus, the patulus and partitus zones are missing in this area. To the south in the northern Antelope Range and the northern Hot Creek Range, the partitus Zone sits directly on the serotinus Zone with the patulus Zone missing.


Bardashev, I.A. 1992. Conodont Stratigraphy of Middle Asian Middle Devonian. Courier Forschungsinstitut Senckenberg 154, 31-83.

Bardashev, I.A., Weddige, K. & Ziegler, W. 2002. The phylomorphogenesis of some Early Devonian Platform conodonts. Senckenbergiana lethaea 82(2), 375-451. View article

Belka, Z., Kaufmann, B. & Bultynck, P. 1997. Conodont-based quantitative biostratigraphy for the Eifelian of the eastern Anti-Atlas, Morocco. Geological Society of America Bulletin 109(6), 643-651. View article

Belka, Z., Klug, C., Kaufmann, B., Korn, D., Doring, S., Feist, R. & Wendt, J. 1999. Devonian conodont and ammonoid succession of the eastern Tafilalt (Ouidane Chebbi section), Anti-Atlas, Morocco. Acta Geologica Polonica 49(1), 1-23.

Berkyová, S. 2009. Lower-Middle Devonian (upper Emsian-Eifelian, serotinus-kockelianus zones) conodont faunas from the Prague Basin, Czech Republic. Bulletin of Geosciences 84(4), 667-686. View article

Bultynck, P. 1970. Révision stratigraphique et paléontologique de la coupe type du Couvinian. Mémoires de l’Institut géologique de l’Université de Louvain 26, 1-152.

Bultynck, P. 1986. Lower Devonian (Emsian) - Middle Devonian (Eifelian and lowermost Givetian) conodont successions from the Ma’der and Tafilalt, southern Morocco. Courier Forschungsinstitut Senckenberg 75, 261-286 [date of imprint, 1985].

Carlisle, D., Murphy, M.A., Nelson, C.A. & Winterer, E.W. 1957. Devonian Stratigraphy of the Sulphur Springs and Pinyon Ranges, Nevada. American Association of Petroleum Geologists, Bulletin 41, 2175-2191.

Chatterton, B.D.E. 1974. Middle Devonian conodonts from the Harrogate Formation, southeastern British Columbia. Canadian Journal of Earth Sciences 11(10), 1461-1484.View article

Chatterton, B.D.E. 1979. Aspects of late Early and Middle Devonian conodont biostratigraphy of western and northwestern Canada. Geological Association of Canada, Special Paper 18, 161-231 [date of imprint, 1978].

Clark, D.L. & Ethington, R.L. 1966. Conodonts and biostratigraphy of the Lower and Middle Devonian of Nevada and Utah. Journal of Paleontology 40(3), 659-689.

Elrick, M., Berkyová, S., Klapper, G., Sharp, Z., Joachimski, M. & Frýda, J. 2009. Stratigraphic and oxygen isotope evidence for My-scale glaciation driving eustasy in the Early-Middle Devonian greenhouse world. Palaeogeography, Palaeoclimatology, Palaeoecology 276(1-4), 170-181. View article

Hinde, G.J. 1879. On conodonts from the Chazy and Cincinnati Group of the Cambro-Silurian, and from the Hamilton and Genesse-Shale divisions of Devonian, in Canada and the United States. Quarterly Journal of the Geological Society of London 35, 351-369. View article

Johnson, J.G. 1962. Lower-Middle Devonian boundary in central Nevada. American Association Petroleum Geologists, Bulletin 46, 542-546.

Johnson, J.G. 1966. Middle Devonian brachiopods from the Roberts Mountains, Central Nevada. Palaeontology 9, 152-181.

Johnson, J.G. 1977. Lower and Middle Devonian faunal intervals in central Nevada based on brachiopods, 16-32. In Murphy, M.A., Berry, W.B.N. & Sandberg, C.A. (eds) Western North America: Devonian. University of California, Riverside Campus Museum Contributions 4.

Johnson, J.G. & Murphy, M.A. 1984. Time-rock model for Siluro-Devonian continental shelf, western United States. Geological Society of America, Bulletin 95, 1349-1359.View article

Johnson, J.G., Klapper, G. & Elrick, M. 1996. Devonian transgressive-regressive cycles and biostratigraphy, northern Antelope Range, Nevada: Establishment of reference horizons for global cycles. Palaios 11, 3-14.View article

Johnson, J.G., Klapper, G.,Murphy, M.A. & Trojan, W.R. 1986. Devonian Series Boundaries in Central Nevada and neighboring regions, Western North America. Courier Forschungsinstitut Senckenberg 75, 177-196 [date of imprint, 1985].

Johnson, J.G. Klapper, G, & Trojan, W.R. 1980. Brachiopod and conodont successions in the Devonian of the northern Antelope Range, central Nevada. Geologica et Palaeontologica 14, 77-116.

Klapper, G. 1971. Sequence within the conodont genus Polygnathus in the New York lower Middle Devonian. Geologica et Palaeontologica 5, 59-79.

Klapper, G. 1973. Polygnathus costatus costatus, 347-348. In Ziegler, W. (ed.) Catalogue of Conodonts, Volume I. 504 pp. E. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart.

Klapper, G. 1977a. Lower and Middle Devonian conodont sequence in central Nevada; with contributions by D.B. Johnson, 33-54. In Murphy, M.A., Berry, W.B.N. & Sandberg, C.A. (eds) Western North America: Devonian. University of California, Riverside Campus Museum Contributions 4.

Klapper, G. 1977b. Polygnathus parawebbi, 477-479. In Ziegler, W. (ed.) Catalogue of Conodonts, Volume III. 574 pp. E. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart.

Klapper, G. & Barrick, J.E. 1983. Middle Devonian (Eifelian) conodonts from the Spillville Formation in northern Iowa and southern Minnesota. Journal of Paleontology 57(6), 1212-1243.

Klapper, G. & Johnson, D.B. 1975. Sequence in conodont genus Polygnathus in Lower Devonian at Lone Mountain, Nevada. Geologica et Palaeontologica 9, 65-83.

Klapper, G. & Johnson, J.G. 1980. Endemism and dispersal of Devonian conodonts. Journal of Palaeontology 54(2), 400-455.

Klapper, G. & Ziegler, W. 1979. Devonian conodont biostratigraphy, 199-224. In House, M.R., Scrutton, C.T. & Bassett, M.G. (eds) The Devonian System. Special Papers in Palaeontology 23, 1-353.

Klapper, G., Ziegler, W. & Mashkova, T.V. 1978. Conodonts and correlation of Lower-Middle Devonian boundary beds in the Barrandian area of Czechoslovakia. Geologica et Palaeontologica 12, 103-116.

Kononova, L.I. & Kim, S.-Y. 2005. Eifelian Conodonts from the Central Russion Platform. Paleontological Journal 39 (Supplement 2), S55-S134.

Lane, R.H. & Ormiston, A.R. 1979. Siluro-Devonian biostratigraphy of the Salmontrout River area, east-central Alaska. Geologica et Palaeontologica 13, 39-95.

Machado, G., Hladil, J., Slavík, L., Koptíková, L., Moreira, N., Fonseca, M. & Fonseca, P. 2010. An Emsian-Eifelian Calciturbidite sequence and the possible correlatable pattern of the Basal Choteč event in Western Ossa-Morena Zone, Portugal (Odivelas Limestone). Geologica Belgica 13(4), 431-446.

Mawson, R. 1987. Early Devonian conodont faunas from Buchan and Bindi, Victoria, Australia. Palaeontology 30(2), 251-297.

Mawson, R. & Talent, J.A. 1989. Late Emsian-Givetian stratigraphy and conodont biofacies - carbonate slope and offshore shoal to sheltered lagoon and nearshore carbonate ramp - Broken River, north Queensland, Australia. Courier Forschungsinstitut Senckenberg 117, 205-259.

Mawson, R. & Talent, J.A. 1994. The Tamworth Group (mid-Devonian) at Attunga, New South Wales: conodont data and inferred ages. Courier Forschungsinstitut Senckenberg 168, 37-59.

Morgan, T.G. 1974. Lithostratigraphy and Paleontology of the Red Hill Area, Eureka County, Nevada. 112 pp. Master of Science in Geology Thesis, University of California, Riverside.

Morrow, J.R. (ed.) 2007. Subcommission on Devonian stratigraphy SDS 2007 field trip guidebook. Devonian Shelf-to-slope facies and events, Central Great Basin, Nevada and Utah, U.S.A. 93 pp. Paleontological Research Institute, Ithaca, NY.

Murphy, M.A. 1977. Middle Devonian rocks of central Nevada, 190-199. In Murphy, M.A., Berry, W.B.N. & Sandberg, C.A. (eds) Western North America: Devonian. University of California, Riverside Campus Museum Contributions 4.

Murphy, M.A. & Gronberg, E.C. 1970. Stratigraphy and correlation of the lower Nevada Group (Devonian) north and west of Eureka, Nevada. Geological Society of America, Bulletin 81, 127-136.View article

Murphy, M.A. & Morgan, T.G. 1974. The Denay Limestone, Middle Devonian of Central Nevada. Geological Society of America, Cordilleran Section, Programs with Abstracts.

Narkiewicz, K. & Bultynck, P. 2007. Conodont biostratigraphy of shallow marine Givetian deposits from the Radom-Lublin area, SE Poland. Geological Quarterly 51(4), 419-442.

Nasedkina, V.A. & Plotnikova, N.P. 1979. On Upper Devonian conodonts on the eastern slope of the Northern Ural Mountains, 52-68. In Conodonts of the Ural Mountains and their stratigraphic significance. Uraľskii Nauchnyi Tsentr Akademii Nauk SSSR, Sverdlovsk. [in Russian]

Nolan, T.B., Merriam, C.W. & Williams, J.S. 1956. The Stratigraphic Section in the Vicinity of Eureka, Nevada. United States Geological Survey, Professional Paper 276, 1-77.

Pedder, A.E.H. 2010. Lower-Middle Devonian rugose coral faunas of Nevada: Contribution to an understanding of the “barren” E Zone and Choteč Event in the Great Basin. Bulletin of Geosciences 85(1), 1-26. View article

Savage, N. 1977. Middle Devonian (Eifelian) conodonts of the genus Polygnathus from the Wadleigh Limestone, southeastern Alaska. Canadian Journal of Earth Sciences 14, 1343-1355.View article

Savage, N. 1995. Middle Devonian conodonts from the Wadleigh Limestone, southeastern Alaska. Journal of Paleontology 69(3), 540-555.

Savage, N. 2011. Polygnathus bagialensis, new name for the homonymous P. praetrigonicus Savage, 1995, and Polygnathus abbessensis, new name for the homonymous P. borealis Savage, 1995 (Conodontes, Polygnathidae). Journal of Paleontology 85(4), 805. View article

Schönlaub, H.P. 1986. Devonian conodonts from section Oberbuchach II in the Carnic Alps (Austria). Courier Forschungsinstitut Senckenberg 75, 353-374 [date of imprint, 1985].

Uyeno, T.T. 1998. Part II: Conodont faunas, 146-191. In Norris, A.W. & Uyeno, T.T. Middle Devonian brachiopods, conodonts, stratigraphy, and transgressive-regressive cycles, Pine Point area, south of Great Slave Lake, District of Mackenzie, Northwest Territories. Geological Survey of Canada Bulletin 522.

Wang, C.-Y. & Ziegler, W. 1983. Devonian conodont biostratigraphy of Guangxi, South China, and the correlation with Europe. Geologica et Palaeontologica 17, 75-107.

Weddige, K. 1977. Die Conodonten der Eifel-Stufe im Typusgebiet und in benachbarten Faciesgebieten. Senckenbergiana lethaea 58 (4/5), 271-419.

Wittekindt, H. 1966. Zur Conodontenchronologie des Mitteldevons. Fortschritte in der Geologie von Rheinland und Westfalen 9, 621-646 [date of imprint, 1965].

Ziegler, W., Klapper, G. & Johnson, J.G. 1976. Redefinition and subdivision of the varcus- Zone (Conodonts, Middle-?Upper Devonian) in Europe and North America. Geologica et Palaeontologica 10, 109-140.