PT - JOURNAL ARTICLE AU - WILLISTON, S. W. TI - VERTEBRATES FROM THE KANSAS PERMIAN AID - 10.1126/science.5.114.395 DP - 1897 Mar 05 TA - Science PG - 395--395 VI - 5 IP - 114 4099 - http://science.sciencemag.org/content/5/114/395.1.short 4100 - http://science.sciencemag.org/content/5/114/395.1.full SO - Science1897 Mar 05; 5