1. Late Ordovician ocean-climate system and paleobiogeography Open Access Author: Herrmann, Achim Dirk Title: Late Ordovician ocean-climate system and paleobiogeography Graduate Program: Geosciences Keywords: Ordovicianocean modelclimate modelmass extinctionpaleobiogeography File: Download eTDHerrmann.pdf Committee Members: Mark E Patzkowsky, Committee Chair/Co-ChairRudy L Slingerland, Committee MemberMichael Allan Arthur, Committee MemberRaymond Gabriel Najjar Jr., Committee MemberDavid Pollard, Committee Member