[059-67] A New Form of Houstonia pusilla from Illinois
Wunderlin, R.P. and Hopkins, W.E. A New Form of Houstonia pusilla from Illinois 059-67-print
[060-13] Hexapterospermum delevoryii from the Middle Pennsylvanian of Southern Illinois
Matten, Lawrence C. and Hopkins, William E. Hexapterospermum delevoryii from the Middle Pennsylvanian of Southern Illinois 060-13-print
[102-20MS2817] A Nuclear Gene Investigation of the Sunfish Genus Lepomis (Perciformes: Centrarchidae)
Peyton, David K. and Robert L. Hopkins, II A Nuclear Gene Investigation of the Sunfish Genus Lepomis (Perciformes: Centrarchidae) PDF: 102-20MS2817-print