1. Plant-bearing coprolites from North American Pennsylvanian coal balls;Baxendale;Palaeontology,1979
2. Evidences for insect activity preserved in fossil wood;Brues;J. Paleontol.,1936
3. Adaptations among Paleozoic insects;Carpenter,1969
4. Structurally preserved plants from southeastern Kentucky: Stauropteris biseriata sp. nov;Cichan;Am. J. Bot.,1982
5. The application of scanning electron microscopy in the characterization of Carboniferous lycopod wood;Cichan;Scanning Electron Microsc.,1981