Stratigraphy of Middle Ordovician rocks in the zinc-lead district of Wisconsin, Illinois, and Iowa

1956 ◽  
Author(s):  
A.F. Agnew ◽  
A.V. Heyl ◽  
C.H. Behre ◽  
E.J. Lyons
Keyword(s):  
Middle Ordovician

The earliest ostracods from the Ordovician of the Prague Basin, Czech Republic

2014 ◽  
Vol 64 (4) ◽  
pp. 367-392 ◽  
Author(s):  
Karolína Lajblová ◽  
Petr Kraft
Keyword(s):  
Czech Republic ◽  
Bohemian Massif ◽  
Massif Central ◽  
Central European ◽  
Middle Ordovician ◽  
Prague Basin ◽  
Barrandian Area ◽  
Fossil Assemblages ◽  
European Variscides

Abstract The earliest ostracods from the Bohemian Massif (Central European Variscides) have been recorded from the Middle Ordovician of the Prague Basin (Barrandian area), in the upper Klabava Formation, and became an abundant component of fossil assemblages in the overlying Šarka Formation. Both early ostracod associations consist of eight species in total, representing mainly eridostracans, palaeocopids, and binodicopids. The revision, description, or redescription of all species and their distribution in the basin is provided. Their diversification patterns and palaeogeographical relationships to ostracod assemblages from other regions are discussed.

Evidence of a tectonically driven sequence succession in the Middle Ordovician Taconic foredeep

Geology ◽  
2000 ◽  
Vol 28 (8) ◽  
pp. 727-730 ◽  
Author(s):  
Michael P. Joy ◽  
Charles E. Mitchell ◽  
Soumava Adhya
Keyword(s):  
Middle Ordovician

INCREASING OXYGENATION AND THE ORDOVICIAN RADIATION: AN INVESTIGATION USING TH/U IN THE LOWER-MIDDLE ORDOVICIAN OF UTAH, USA

2016 ◽  
Author(s):  
Pedro J. Marenco ◽  
◽  
Katherine R. Martin ◽  
Donald C. Barber
Keyword(s):  
Middle Ordovician
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