Byrum, S. and Lieberman, B. S. 2019 Phylogenetic and biogeographic patterns in spatangoid echinoids from the Cretaceous Western Interior Seaway. Geological Society of America, Joint Section Meeting, Manhattan, KS. Geological Society of America Abstracts with Programs, 51 (2). DOI:// 10.1130/abs/2019SC-326851. (Poster)