A Re-Examination of the Contributions of Biofacies and Geographic Range to Extinction Risk in Ordovician Graptolites, James T. Boyle, H. David Sheets, Shuang-Ye Wu, Daniel Goldman, Michael J. Melchin, Roger A. Cooper, Peter M. Sadler, Charles E. Mitchell
Shuang-ye Wu

The Global Stratotype Section and Point (GSSP) for the base of the Katian Stage of the Upper Ordovician Series at Black Knob Ridge, Southeastern Oklahoma, USA, Daniel Goldman, Stephen A. Leslie, Jaak Nõlvak, Seth Young, Stig M. Bergström, Warren D. Huff
Daniel Goldman

A Re-Examination of the Contributions of Biofacies and Geographic Range to Extinction Risk in Ordovician Graptolites, James T. Boyle, H. David Sheets, Shuang-Ye Wu, Daniel Goldman, Michael J. Melchin, Roger A. Cooper, Peter M. Sadler, Charles E. Mitchell
Geology Faculty Publications

The Global Stratotype Section and Point (GSSP) for the base of the Katian Stage of the Upper Ordovician Series at Black Knob Ridge, Southeastern Oklahoma, USA, Daniel Goldman, Stephen A. Leslie, Jaak Nõlvak, Seth Young, Stig M. Bergström, Warren D. Huff
Geology Faculty Publications