Articles

Global Series and Stages for the Ordovician System: A Progress Report

Stan Finney

309

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Ordovician conodonts from the Mithaka Formation (Georgina Basin, Australia). Regional and paleobiogeographical implications

Tyler Kuhn, Chris Barnes

317

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The Early Paleozoic history of the Cuyania (greater Precordillera) terrane of western Argentina: evidence from geochronology of detrital zircons from Middle Cambrian sandstones

Stan Finney, Silvio Heriberto Peralta, George Gehrels, Kathie Marsaglia

339

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Tremadocian Graptolite-Conodont Biostratigraphy of the South American Gondwana margin (Eastern Cordillera, NW Argentina)

Gladys Del Carmen Ortega, G. L. (Guillermo L.) Albanesi

355

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Moulting in Ordovician dalmanitoid and acastoid trilobites of the Prague Basin. Preliminary observation

Petr Budil, Jana Bruthansová

373

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Darriwilian Conodont Biostratigraphy of the Las Chacritas Formation, Central Precordillera (San Juan Province, Argentina)

Susana Heredia, Silvio Heriberto Peralta

385

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The Early to Middle Ordovician graptolite faunal succession of the Trail Creek region, central Idaho, U.S.A

Jörg Maletz, Daniel Goldman, M. Cone

395

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