PRE-CONFERENCE FIELD TRIP: Ordovician of the Southern Appalachians, June 3rd – 7th, 2015 Achim Hermann and John T. Haynes. Stratigraphy Volume 12, No. 3-4 Online Supplement pp. 203-251 - online 30 May 2015 12th International Symposium on the Ordovician System Field Trip Guide Files View Article