1. Dinophyton, a problematic new plant genus from the Upper Triassic of the southwestern United States;Ash;Palaeontology,1970
2. The systematic position of Eoginkgoites;Ash;Am. J. Bot.,1976
3. An unusual bennettitalean leaf from the Upper Triassic of the southwestern United States;Ash;Palaeontology,1977
4. Upper Triassic floral zones of North America;Ash,1980
5. Upper Triassic Dinophyton Zone plant fossils from the Stockton Formation in southeastern Pennsylvania;Axsmith;Mosasaur,1989