1. Structure and relationships of some Middle Devonian plants from Western New York;Arnold;American Journal of Botany,1940
2. Observations on fossil plants from the Devonian of Eastern North America. VI. Xenocladia medullosina Arnold;Arnold;Contributions from the Museum of Paleontology. University of Michigan,1952
3. Anatomy and morphology of Psilophyton dawsoni, sp. n. from the late Lower Devonian of Quebec (Gaspé) and Ontario, Canada;Banks;Palaeontographica Americana,1975
4. Origin and cellular character of xylem rays in gymnosperms;Bannan;Botanical Gazette,1934
5. Crossia virginiana gen. et sp. nov., a new member of the Stenokoleales from the Middle Devonian of southwestern Virginia;Beck;Palaeontographica,1993