Paleobiology, 34(1), 2008, pp. 104–116 A sampling-adjusted macroevolutionary history for Ordovician–Early Silurian crinoids Shanan E. Peters and William I. Ausich

Source URL: strata.geology.wisc.edu

ORDOVICIAN NEWS SUBCOMMISSION ON ORDOVICIAN STRATIGRAPHY INTERNATIONAL COMMISSION ON STRATIGRAPHY Number 33 (for 2015)

Source URL: ordovician.stratigraphy.org

ORDOVICIAN NEWS SUBCOMMISSION ON ORDOVICIAN STRATIGRAPHY INTERNATIONAL COMMISSION ON STRATIGRAPHY Number 32 (for 2014)

Source URL: ordovician.stratigraphy.org

ORDOVICIAN NEWS 31 compilation FINAL

Source URL: ordovician.stratigraphy.org

IGCP2_Updated_FINAL VERSION

Source URL: ordovician.stratigraphy.org

Uncertainty of estimates of groundwater yield for the Cambrian-Ordovician Aquifer in northeastern Illinois

Source URL: www.sws.uiuc.edu

Journal of Sedimentary Research, 2005, v. 75, 907–920 DOI: jsrPYRITE AND MARCASITE COATED GRAINS IN THE ORDOVICIAN WINNIPEG FORMATION, CANADA: AN INTERTWINED RECORD OF SURFACE CONDITIONS, STRATIGRAPHI

Source URL: www.indiana.edu

• Geology
• Mineralogy
• Petrology
• Sedimentary rocks
• Sulfide minerals
• Pyrite group
• Sedimentology
• Pyrite
• Marcasite
• Clastic rock
• Concretion
• Goethite

A Comparison of Potentiometric Surfaces for the Cambrian-Ordovician Aquifers of Northeastern Illinois, 1995 and 2000

Source URL: www.isws.illinois.edu

• Water
• Hydrology
• Hydraulic engineering
• Hydrogeology
• Bodies of water
• Geotechnical engineering
• Aquifer
• Groundwater
• Water well
• Potentiometric surface
• Water table
• Water resources

Main Topics 7th Baltic Stratigraphical Conference

Source URL: www.gi.ee

• Geological periods
• Geology
• Earth
• Stratigraphy
• Silurian
• Ordovician

A Summary of Pumpage from the Cambrian-Ordovician Aquifers of Northeastern Illinois,

Source URL: www.isws.illinois.edu

• Water
• Hydrology
• Physical geography
• Hydraulic engineering
• Bodies of water
• Water wells
• Aquifer
• Hydrogeology
• Groundwater