Danielsen and Over—Lower Silurian conodonts, Shine Jinst region, Mongolia
extends the length of the element. These specimens are placed within Ozarkodina based on the shape of the cusp, growth of denticles surrounding the cusp, and the excavated basal cavity. Specimens are fragmented and, due to the lack of full denticles and posteriormost and anteriormost processes, a specific apparatus position is left open, comparable to both P2 and S.
Acknowledgments
We thank N. Sullivan, U. Bold, C. Minjin, C. Soja, and P. Myrow for assistance with organization and execution of field work for this study, and C. Corradini, M. Kleffner, and the editors for their helpful comments on the manuscript. We also acknowledge the KECK Geology Consortium and the Geneseo Foundation for financial support.
References
Aldridge, R.J., 1972, Llandovery conodonts from the Welsh Borderland: Bul- letin of the British Museum (Natural History) Geology, v. 22, p. 125–231.
Aldridge, R.J., 2002, Conodonts from the Skomer Volcanic Group (Llandovery series, Silurian) of Pembrokeshire, Wales: Special Papers in Paleontology, v. 67, p. 15–28.
Aldridge, R.J., and Mohamed, I., 1982, Conodont biostratigraphy of the early Silurian of the Oslo Region, in Worsley, D., ed., IGUS Subcommission on Silurian Stratigraphy, Field Meeting, Oslo Region, Paleontological Contributions from the University of Oslo, v. 278, p. 109–120.
Aristov, V.A., and Nyamsuren, G., 1998, The age of volcanic sequence in the middle Paleozoic deposits of southern Mongolia: Stratigraphy and Geological Correlation, v. 6, p. 92–96.
Armstrong, H.A., 1990, Conodonts from the Upper Ordovician–lower Silurian carbonate platform of North Greenland: Bulletin Gronlands Geologiske Undersogelse, v. 159, 151 p.
Badarch, G., Cunningham, W.D., and Windley, B.F., 2002, A new terrane subdivision for Mongolia: Implications for the Phanerozoic crustal growth of central Asia: Journal of Asian Earth Sciences, v. 21, p. 87–110.
Barrick, J.E., 1977, Multielement simple-cone conodonts from the Clarita Formation (Silurian) Arbuckle Mountains, Oklahoma: Geologica et Palaeontologica, v. 11, p. 47–68.
Bassler, R.S., 1925, Classification and stratigraphic use of the conodonts: Geological Society of America Bulletin, v. 36, p. 218–220.
Barrick, J.E., and Klapper, G., 1976, Multielement Silurian (late Llandoverian– Wenlockian) conodonts of the Clarita Formation, Arbuckle Mountains, Oklahoma, and phylogeny of Kockelella: Geologica et Palaeontologica, v. 10, p. 59–100.
Bergström, S.M., 1990, Relations between conodont provincialism and the changing palaeogeography during the early Palaeozoic, in McKerrow,W.S., and Scotese, C.R., eds., Palaeozoic Palaeogeography and Biogeography: Geological Society Memoir, v. 12, p. 105–121.
Bergström, S.M., and Bergström, J., 1996, The Ordovician-Silurian boundary successions in Östergötland and Västergötland, S. Sweden: GFF, v. 118, p. 25–42.
Bergström, S.M., Eriksson, M.E., Young, S.A., and Widmark, E.-M., 2012, Conodont biostratigraphy, and δ13C and δ34S isotope chemostratigraphy, of the uppermost Ordovician and lower Silurian at Osmundsberget, Dalarna, Sweden: GFF, v. 134, p. 251–272.
Berkyová, S., 2009, Lower–Middle Devonian (upper Emsian–Eifelian, serotinus-kockelianus zones) conodont faunas from the Prague Basin, the Czech Republic: Bulletin of Geosciences, v. 84, p. 667–686.
Bischoff, G.C.O., 1986, Early and middle Silurian conodonts from midwestern New South Wales: Courier Forschungsinstitut Senckenberg, v. 89, 337 p.
Bischoff, G., and Sannemann, D., 1958, Unterdevonische Conodonten aus dem Frankenwald: Notizblatt des Hessisches Landesamt für Bodenforschung zu Wiesbaden, v. 86, p. 87–110.
Branson, E.B., and Branson, C.C., 1947, Lower Silurian conodonts from Kentucky: Journal of Paleontology, v. 21, p. 549–556.
Branson, E.B., and Mehl, M.G., 1933a, Conodonts from the Bainbridge (Silurian) of Missouri: The University of Missouri Studies, v. 8, p. 39–52.
Branson, E.B., and Mehl, M.G., 1933b, Conodonts from the Plattin (middle Ordovician) of Missouri: The University of Missouri Studies, v. 8, p. 101–119.
89
Branson, E.B., Mehl, M.G., and Branson, C.C., 1951, Richmond conodonts from Kentucky and Indiana: Journal of Paleontology, v. 25, p. 1–17.
Cocks, L.R.M., and Torsvik, T.H., 2007, Siberia, the wandering northern terrane, and its changing geography through the Palaeozoic: Earth-Science Reviews, v. 82, p. 29–74.
Cooper, B.J., 1975, Multielement conodonts from the Brassfield Limestone (Silurian) of southern Ohio: Journal of Paleontology, v. 49, p. 984–1008.
Cooper, B.J., 1976, Multielement conodonts from the St. Clair Limestone (Silurian) of southern Illinois: Journal of Paleontology, v. 50, p. 205–217.
Cooper, B.J., 1977, Toward a familial classification of Silurian conodonts: Journal of Paleontology, v. 51, p. 1057–1071.
Corradini, C., 2007, The conodont genus Pseudooneotodus Drygant from the Silurian and Lower Devonian of Sardinia and the Carnic Alps (Italy): Bollettino della Società Paleontologica Italiana, v. 46, p. 139–148.
Corradini, C., and Corriga, M.G., 2010, Silurian and lowermost Devonian conodonts from the Passo Volaia area (Carnic Alps, Italy): Bollettino della Società Paleontologica Italiana, v. 49, p. 237–253.
Corradini, C., Corriga, M.G., Pondrelli, M., Serventi, P., and Simonetto, L., 2009, Il Siluriano di Monte Cocco (Alpi Carniche): Gortania Geologia, Paleontologia, Paletnologia, v. 31, p. 23–30.
Corriga, M.G., and Corradini, C., 2009, Upper Silurian and Lower Devonian conodonts from the Monte Cocco II Section (Carnic Alps, Italy): Bulletin of Geosciences, v. 84, p. 155–168.
Corriga, M.G., Corradini, C., Pondrelli, M., and Simonetto, L., 2012, Lochkovian (Lower Devonian) conodonts from the Rio Malinfier section (Carnic Alps, Italy): Gortania Geologia, Paleontologia, Paletnologia, v. 33, p. 31–38.
Corriga, M.G., Suttner, T.J., Corradini, C., Kido, E., Pondrelli, M., and Simonetto, L., 2011, The age of the La Valute Limestone-Findenig Lime- stone Transition in the La Valute Section (Mount Zermula area, Carnic Alps): Gortania Geologia, Paleontologia, Paletnologia, v. 32, p. 5–12.
Corriga, M.G., Corradini, C., and Walliser, O.H., 2014, Upper Silurian and Lower Devonian conodonts from Tafilalt, southeastern Morocco: Bulletin of Geosciences, v. 89, p. 183–200.
Cramer, B.D., Brett, C.E., Melchin, M.J., Männik, P., Kleffner, M.A., McLaughlin, P.I., Loydell, D.K., Munnecke, A., Jeppsson, L., Corradini, C., Brunton, F.R., and Saltzman, M.R., 2011, Revised correla- tion of Silurian Provincial series of North America with global and regional chronostratigraphic units and δ13Ccarb chemostratigraphy: Lethaia, v. 44, p. 185–202.
Dahlqvist, P., and Bergström, S.M., 2005, The lowermost Silurian of Jämtland, central Sweden: Conodont biostratigraphy, correlation and biofacies: Transactions of the Royal Society of Edinburgh: Earth Sciences, v. 96, p. 1–19.
Drygant, D.M., 1974, Simple conodonts from the Silurian and lowermost Devonian of the Volyno-Podolian: Paleontologicheskiy Sbornik, v. 10, p. 64–69.
Dumoulin, J.A., Bradley, D.C., Harris, A.G., and Repetski, J.E., 1997, Lower Paleozoic deep-water facies of the Medfra area, central Alaska, in Kelley, K.D., ed., Geologic Studies in Alaska by the U.S. Geological Survey, 1997: U.S. Geological Survey Professional Paper 1614, p. 73–103.
Ethington, R.L., 1959, Conodonts of the Ordovician Galena Formation: Journal of Paleontology, v. 33, p. 257–292.
Gibson, T.M., Myrow, P.M., Macdonald, F.A., Minjin, C., and Gehrels, G.E., 2013, Depositional history, tectonics, and detrital zircon geochronology of Ordovician and Devonian strata in southwestern Mongolia: Geological Society of America Bulletin, v. 125, p. 877–893.
Gutiérrez-Marco, J.C., Sarmiento, G.N., and Rábano, I., 2014, Un olistostroma con cantos y bloques del Paleozoico Inferior en La Cuenca Carbonífera del Guadalmellato (Córdoba): Parte II: Bioestratigrafía y afinidades paleogeográficas: Revista de la Sociedad Geológica de España, v. 27, no. 1, p. 27–44.
Guy, A., Schulmann, K., Clauer, N., Hasalová, P., Seltmann, R., Armstrong, R., Lexa, O., and Benedictol, A., 2014, Late Paleozoic-Mesozoic tectonic evolution of the Trans-Altai and South Gobi Zones in southern Mongolia based on structural and geochronological data: Gondwana Research, v. 25, p. 309–337.
Harris, A.C., Percival, I.G., Cooke, D.R., Tosdal, R.M., Fox, N., Allen, C.M., Tedder, I., McMillan, C., Dunham, P., and Collett, D., 2014, Marine volcanosedimentary basins hosting Porphyry Au-Cu deposits, Cadia Valley, New South Wales, Australia: Economic Geology, v. 109, p. 1117–1135.
Hass, W.H., 1959, Conodonts from the Chappel Limestone of Texas: U. S. Geological Survey Professional Paper 294-J, p. 363–399.
Idris, M.B., 1984, Local variations in the distribution of Silurian conodonts of the Distomodus kentuckyensis Zone of the Oslo region, Norway: Norsk Geologisk Tidsskrift, v. 64, p. 181–191.
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132 |
Page 133 |
Page 134 |
Page 135 |
Page 136 |
Page 137 |
Page 138 |
Page 139 |
Page 140 |
Page 141 |
Page 142 |
Page 143 |
Page 144 |
Page 145 |
Page 146 |
Page 147 |
Page 148 |
Page 149 |
Page 150 |
Page 151 |
Page 152 |
Page 153 |
Page 154 |
Page 155 |
Page 156 |
Page 157 |
Page 158 |
Page 159 |
Page 160 |
Page 161 |
Page 162 |
Page 163 |
Page 164 |
Page 165 |
Page 166 |
Page 167 |
Page 168 |
Page 169 |
Page 170 |
Page 171 |
Page 172 |
Page 173 |
Page 174 |
Page 175 |
Page 176 |
Page 177 |
Page 178 |
Page 179 |
Page 180 |
Page 181 |
Page 182 |
Page 183 |
Page 184 |
Page 185 |
Page 186 |
Page 187 |
Page 188