The purpose of this volume is to list all systematically treated or illustrated Paleozoic Crinoidea for the years 1986 through 1990. Initially it was planned to include the Coronate Echinoderms; however none were illustrated or systematically treated during the 1986 through 1990 interval. This volume continues and updates GSA Memoir 137, Bibliography and Index of Paleozoic Crinoids 1942-1968 (Webster, 1973); GSA Microform Publication 8, Bibliography and Index of Paleozoic Crinoids 1969-1973 (Webster, 1977); GSA Microform Publication 16, Bibliography and Index of Paleozoic Crinoids 1974-1980 (Webster, 1986); and GSA Microform Publication 18, Bibliography and Index of Paleozoic Crinioids and Coronate Echinoderms 1981-1985 (Webster. 1988).