Skip to main content
×
Home

Magnigondolella, a new conodont genus from the Triassic of North America

  • Martyn L. Golding (a1) and Michael J. Orchard (a1)
Abstract
Abstract

The new conodont genus Magnigondolella is recognized based on specimens recovered from the Anisian (Middle Triassic) of British Columbia in Canada, and Nevada in the USA. This new genus encompasses problematic specimens with high carinas, which have recently been collectively referred to as Neogondolella ex gr. regalis Mosher. Ten species from North America are herein assigned to Magnigondolella n. gen., including the eight new species M. alexanderi, M. cyri, M. julii, M. nebuchadnezzari, M. salomae, M. n. sp. A, M. n. sp. B, and M. n. sp. C, as well as the two existing species M. regalis (Mosher) and M. dilacerata (Golding and Orchard). Other species from the Tethys region are also tentatively assigned to Magnigondolella n. gen. Based on published records, the genus appears to range from the Spathian to the upper Anisian in North America. The recognition of eight new species from the Anisian significantly increases the conodont biodiversity of this period, which has previously been regarded as a time of low diversity. Although some of the species included within Magnigondolella n. sp. have relatively long stratigraphic ranges, many have been identified in both British Columbia and Nevada, and therefore show potential for biostratigraphic correlation on a regional scale.

Copyright
References
Hide All
Bender H., 1970, Zur Gliederung der Mediterranen Trias II. Die Conodontenchronologie der Mediterranen Trias: Annales Géologiques des Pays Helléniques, v. 19, p. 465550.
Bucher H., 1988, A new Middle Anisian (Middle Triassic) ammonoid zone from northwestern Nevada (USA): Eclogae Geologicae Helvetiae, v. 81, p. 723762.
Bucher H., 1989, Lower Anisian ammonoids from the northern Humboldt Range (northwestern Nevada, USA) and their bearing upon the Lower-Middle Triassic boundary: Eclogae Geologicae Helvetiae, v. 82, p. 9451002.
Bucher H., 1992a, Ammonoids of the Hyatti Zone and the Anisian transgression in the Star Peak Group, northwestern Nevada, USA: Palaeontographica Abteilung A, v. 223, p. 137166.
Bucher H., 1992b, Ammonoids of the Shoshonensis Zone (Middle Anisian, Middle Triassic) from northwestern Nevada (USA): Jahrbuch der Geologischen Bundesanstalt Wien, v. 135, p. 425465.
Bucher H., 1994, New ammonoids from the Taylori Zone (Middle Anisian, Middle Triassic) from northwestern Nevada (USA): Mémoires de Géologie (Lausanne), v. 22, p. 18.
Bucher H., 2002, Early Anisian (Middle Triassic) ammonoid biostratigraphy of northeastern British Columbia: Eclogae Geologicae Helvetiae, v. 95, p. 277287.
Chen Y., Krystyn L., Orchard M.J., Lai X., and Richoz S., 2016, A review of the evolution, biostratigraphy, provincialism and diversity of Middle and early Late Triassic conodonts: Papers in Palaeontology, v. 2, p. 235263.
Chhabra N.L., and Kumar S., 1992, Late Scythian through early Carnian conodont assemblages and their biostratigraphic importance from off shore carbonates of northern Kumaun, Tethys Himalaya, India: Revue de Micropaléontologie, v. 35, p. 321.
Clark D.L., Paull R.K., Solien M.A., and Morgan W.A., 1979, Triassic conodont biostratigraphy in the Great Basin, in Sandberg, C.A., and Clark, D.L., eds., Conodont biostratigraphy of the Great Basin and Rocky Mountains: Brigham Young University Geology Studies, v. 26, p. 179186.
Davies G.R., 1997, The Triassic of the Western Canada Sedimentary Basin: tectonic and stratigraphic framework, paleogeography, paleoclimate and biota, in Moslow, T.F., and Wittenberg, J., eds., Triassic of the Western Canada Sedimentary Basin: Bulletin of Canadian Petroleum Geology, v. 45, p. 434460.
Dzik J., 1976, Remarks on the evolution of Ordovician conodonts: Acta Palaeontologica Polonica, v. 21, p. 395455.
Evoy R.W., and Moslow T.F., 1995, Lithofacies associations and depositional environments in the Middle Triassic Doig Formation, Buick Creek Field, northeastern British Columbia: Bulletin of Canadian Petroleum Geology, v. 43, p. 461475.
Ferri F., Golding M.L., Mortensen J.K., Zonneveld J.P., and Orchard M.J., 2010, Toad Formation (Montney and Doig equivalent) in northwestern Halfway River map area, British Columbia (NTS 094B/14): Geoscience Reports 2010, B.C. Ministry of Energy, p. 21–34.
Golding M.L., 2014, Biostratigraphy and sedimentology of Triassic hydrocarbon-bearing rocks in northeastern British Columbia [Ph.D. Dissertation]: Vancouver, University of British Columbia, 402 p.
Golding M.L., in press, Reconstruction of the multielement apparatus of Neogondolella ex gr. regalis Mosher (Conodonta) from the Anisian (Middle Triassic) of British Columbia, Canada: Journal of Micropalaeontology.
Golding M.L., and Orchard M.J., 2016, New species of the conodont Neogondolella from the Anisian (Middle Triassic) of northeastern British Columbia, Canada, and their importance for regional correlation: Journal of Paleontology, v. 90, p. 11971211.
Golding M.L., Orchard M.J., Zonneveld J.-P., Henderson C.M., and Dunn L., 2014a, An exceptional record of the sedimentology and biostratigraphy of the Montney and Doig formations in British Columbia: Bulletin of Canadian Petroleum Geology, v. 62, p. 157176.
Golding M.L., Orchard M.J., and Zonneveld J.-P., 2014b, A summary of new conodont biostratigraphy and correlation of the Anisian (Middle Triassic) strata in British Columbia, Canada: Albertiana, v. 42, p. 3342.
Golding M.L., Orchard M.J., Zonneveld J.-P., and Wilson N.S.F., 2015, Determining the age and depositional model of the Doig Phosphate Zone in northeastern British Columbia using conodont biostratigraphy: Bulletin of Canadian Petroleum Geology, v. 63, p. 143170.
Goudemand N., Orchard M.J., Bucher H., and Jenks J., 2012, The elusive origin of Chiosella timorensis (Conodont Triassic): Geobios, v. 45, p. 199207.
Hirsch F., 1994, Triassic conodonts as ecological and eustatic sensors, in Embry, A.F., Beauchamp, B., and Glass, D.J., eds., Pangea: Global Environments and Resources: Memoir of the Canadian Society of Petroleum Geologists, v. 17, p. 949959.
Jeppsson L., Anehus R., and Fredholm D., 1999, The optimal acetate buffered acetic acid technique for extracting phosphatic fossils: Journal of Paleontology, v. 73, p. 964972.
Kiliç A.M., Plasencia P., Ishida K., Guex J., and Hirsch F., 2016, Proteromorphosis of Neospathodus (Conodonta) during the Permian–Triassic crisis and recovery: Revue de Micropaléontologie, v. 59, p. 3339.
Kozur H., 1989, The taxonomy of the Gondolellid conodonts in the Permian and Triassic: Courier Forschunginstitut Senkenberg, v. 117, p. 409469.
Kozur H., Krainer K., and Mostler H., 1994, Middle Triassic conodonts from the southern Karawanken Mountains (Southern Alps) and their stratigraphic importance: Geologische-Paläontologische Mitteilungen Innsbruck, v. 19, p. 165200.
Lindström M., 1970, A suprageneric taxonomy of the conodonts: Lethaia, v. 3, p. 427445.
Monnet C., and Bucher H., 2005a, Anisian (Middle Triassic) ammonoids from North America: quantitative biochronology and biodiversity: Stratigraphy, v. 2, p. 281296.
Monnet C., and Bucher H., 2005b, New Middle and Late Anisian (Middle Triassic) ammonoid faunas from northwestern Nevada (USA): taxonomy and biochronology: Fossils and Strata, v. 52, 121 p.
Mosher L.C., 1968, Triassic conodonts from western North America and Europe and their correlation: Journal of Paleontology, v. 42, p. 895946.
Mosher L.C., 1970, New conodont species as Triassic guide fossils: Journal of Paleontology, v. 44, p. 737742.
Mosher L.C., 1973, Triassic conodonts from British Columbia and the northern Arctic Islands: Geological Survey of Canada Bulletin, v. 222, p. 141193.
Mosher C., and Clark D.L., 1965, Middle Triassic conodonts from the Prida Formation of Northwestern Nevada: Journal of Paleontology, v. 39, p. 551565.
Moslow T.F., 2000, Reservoir architecture of a fine-grained turbidite system: Lower Triassic Montney Formation, Western Canada Sedimentary Basin: Deep Water Reservoirs of the World, Society of Economic Paleontologists and Mineralogists, Gulf Coast Section, 20th Annual Bob Perkins Research Conference, Houston. Program and Abstracts, p. 42.
Nakrem H.A., Orchard M.J., Weitschat W., Hounslow M.W., Beatty T.W., and Mørk A., 2008, Triassic conodonts from Svalbard and their Boreal correlations: Polar Research, v. 27, p. 523539.
Narkiewicz K., 1999, Conodont biostratigraphy of the Muschelkalk (Middle Triassic) in the central part of the Polish Lowlands: Geological Quarterly, v. 43, p. 313328.
Nichols K.M, and Silberling N.J., 1977, Stratigraphy and depositional history of the Star Peak Group (Triassic), northwestern Nevada: Geological Society of America Special Paper, v. 178, 73 p.
Nicora A., 1976, Conodont-fauna, stratigraphic position and relations to the Tethyan succession of the Shoshonensis Zone (Pelsonian) of Nevada: Rivista Italiana di Paleontologia e Stratigrafia, v. 82, p. 627648.
Nicora A., 1977, Lower Anisian platform-conodonts from the Tethys and Nevada: taxonomic and stratigraphic revision: Palaeontographica Abteilung A, v. 157, p. 88107.
Nicora A., and Kovács S., 1984, Conodont fauna from the Rotelliformis, Meeki and Occidentalis zones (Middle Triassic) of Humboldt Range, Nevada, Western North America: Rivista Italiana di Paleontologia e Stratigrafia, v. 90, p. 135164.
Nicora A., Kozur H., and Mietto P., 1980, Gondolella pridaensis sp. n. A new conodont species from the Middle Triassic: Rivista Italiana di Paleontologia, v. 86, p. 761768.
Ogg J.G., Huang C., and Hinnov L., 2014, Triassic timescale status: a brief overview: Albertiana, v. 41, p. 330.
Orchard M.J., 1987, Conodonts from western Canadian chert: their nature, distribution and stratigraphic application, in Austin, R.L., ed., Conodonts: Investigative Techniques and Applications: British Micropalaeontological Society Series: Chichester, Ellis Horwood Ltd., p. 94119.
Orchard M.J., 1994, Conodont biochronology around the Early-Middle Triassic boundary: new data from North America, Oman and Timor: Mémoires de Géologie (Lausanne), v. 22, p. 105114.
Orchard M.J., 2006, Late Paleozoic and Triassic conodont faunas of Yukon and northern British Columbia and implications for the evolution of the Yukon-Tanana terrane, in Colpron, M., and Nelson, J.L., eds., Paleozoic Evolution and Metallogeny of Pericratonic Terranes at the Ancient Pacific Margin of North America: Canadian and Alaskan Cordillera, Geological Association of Canada Special Paper, v. 45, p. 229260.
Orchard M.J., 2007, Conodont diversity and evolution through the latest Permian and Early Triassic upheavals: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 252, p. 93117.
Orchard M.J., 2008, Lower Triassic conodonts from the Canadian Arctic, their intercalibration with ammonoid-based stages and a comparison with other North American Olenekian faunas: Polar Research, v. 27, p. 393412.
Orchard M.J., 2010, Triassic conodonts and their role in stage boundary definition: Journal of the Geological Society of London, v. 334, p. 139161.
Orchard M.J., 2014, Conodonts from the Carnian-Norian boundary (Upper Triassic) of Black Bear Ridge, northeastern British Columbia, Canada: New Mexico Museum of Natural History and Science Bulletin, v. 64, 139 p.
Orchard M.J., and Bucher H., 1992, Conodont-ammonoid intercalibration around the Lower-Middle Triassic boundary: Nevadan clocks help tell British Columbian time: Geological Survey of Canada Paper, v. 92–1E, p. 133140.
Orchard M.J., and Tozer E.T., 1997, Triassic conodont biochronology, its calibration with the ammonoid standard, and a biostratigraphic summary of the Western Canada Sedimentary Basin, in Moslow, T.F., and Wittenberg, J., eds., Triassic of the Western Canada Sedimentary Basin: Bulletin of Canadian Petroleum Geology, v. 45, p. 675692.
Orchard M.J., Grădinaru E., and Nicora A., 2007a, A summary of the conodont succession around the Olenekian-Anisian boundary at Deşli Caira, North Dobrogea, Romania, in Lucas, S.G., and Spielmann, J.A., eds., The Global Triassic: New Mexico Museum of Natural History and Science Bulletin, v. 41, p. 341346.
Orchard M.J., Lehrmann D.J., Wei J., Wang H., and Taylor H., 2007b, Conodonts from the Olenekian-Anisian boundary beds, Guandao, Guizhou Province, China, in Lucas, S.G., and Spielmann, J.A., eds., The Global Triassic: New Mexico Museum of Natural History and Science Bulletin, v. 41, p. 347354.
Pander C.H., 1856, Monographie der fossilen Fische des silurischen Systems der russisch-baltischen Gouvernements: St. Petersburg, Akademie der Wissenschaften, 91 p.
Ritter S.M., 1989, Morphometric patterns in Middle Triassic Neogondolella mombergensis (Conodonta), Fossil Hill, Nevada: Journal of Paleontology, v. 63, p. 233245.
Silberling N.J., and Nichols K.M., 1982, Middle Triassic molluscan fossils of biostratigraphic significance from the Humboldt Range, northwestern Nevada: U.S. Geological Survey Professional Paper, v. 1207, 77 p.
Silberling N.J., and Tozer E.T., 1968, Biostratigraphic classification of the marine Triassic in North America: U.S. Geological Survey Special Paper, v. 110, 63 p.
Silberling N.J., and Wallace R.E., 1969, Stratigraphy of the Star Peak Group (Triassic) and overlying Mesozoic rocks, Humboldt Range, Nevada: U.S. Geological Survey Professional Paper, v. 592, 50 p.
Stone J., 1987, Review of investigative techniques used in the study of conodonts, in Austin, R.L., ed., Conodonts: Investigative Techniques and Applications: British Micropalaeontological Society Series: Chichester, Ellis Horwood Ltd., p. 1734.
Tian C.R., 1982, Triassic conodonts in the Tulong section from Nyalam County, Xizang (Tibet), China: Contribution to Geology of Qinghai-Xizang (Tibet) Plateau, v. 10, p. 153165.
Tozer E.T., 1967, A standard for Triassic time: Geological Survey of Canada Bulletin, v. 156, 103 p.
Tozer E.T., 1994, Canadian Triassic Ammonoid Faunas: Geological Survey of Canada Bulletin, v. 467, 663 p.
Wang C.Y., and Wang Z.H., 1976, Triassic conodonts from the Mt. Jolmo Lungma region, in Tibetan Scientific Expedition Team of Chinese Academy of Science, eds., A Report of Scientific Expedition in the Mt. Jolmo Lungma Region (1966–1968). Palaeontology: Beijing, Science Press, 2, p. 387–424.
Wardlaw B.R., and Jones D.L., 1980, Triassic conodonts from eugeoclinal rocks of western North America and their tectonic significance: Rivista Italiana di Paleontologia e Stratigrafia, v. 85, p. 895908.
Wyld S.J., 2000, Triassic evolution of the arc and backarc of northwestern Nevada, and evidence for extensional tectonism: Geological Society of America Special Paper, v. 347, p. 185207.
Zonneveld J.-P., 2010, The Triassic of northeastern British Columbia: sedimentary characteristics and stratigraphic architecture of conventional and unconventional reservoir successions: Geological Association of Canada-Mineralogical Association of Canada Joint Annual Meeting (GeoCanada 2010), Williston Lake Field Trip Guidebook, 158 p.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of Paleontology
  • ISSN: 0022-3360
  • EISSN: 1937-2337
  • URL: /core/journals/journal-of-paleontology
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Metrics

Altmetric attention score

Full text views

Total number of HTML views: 2
Total number of PDF views: 19 *
Loading metrics...

Abstract views

Total abstract views: 103 *
Loading metrics...

* Views captured on Cambridge Core between 23rd November 2017 - 11th December 2017. This data will be updated every 24 hours.