Ashworth, A. C. 1999 Climate change in North Dakota since the last glaciation, pp. 21-23. NDSU Central Grasslands Research Extension Center Annual Report.

Ashworth, A.C. 1999. Climate change in North Dakota since the last glaciation - review of the paleontological record. Proceedings of the North Dakota Academy of Science, 53: 171-176.

Ashworth, A. C. 1998. Paleobotanic fragments from COMRAC 9-4, Mount Feather Sirius deposit, p. 59. In: (Wison, G. and Barron, J., coords), Mount Feather Sirius Group core workshop and and collaborative sample analysis. BPRC Rep. No. 14.

Ashworth, A. C. 1998 (compiler). Cenozoic of the Transantarctic Mountains, In: D.H. Elliot, J.W. Collinson and W.R. Hammer (eds.), Earth Science Research Objectives: Central and Southern Transantarctic Mountains, pp. 36-42, BPRC Miscellaneous Report No. M-402, Columbus, Ohio.

Ashworth, A., Hart, C., Harwood, D., McKelvey, B., Webb, P., and Wilson, G.(contributors). 1998. Land-based Tertiary and Quaternary Records, In: A. Grunow and A. Leventer (eds.), Geological and geophysical investigations of the East Antarctic margin. BPRC Workshop Report, February 21-23, 1997, Ohio State University, Columbus., Ohio

Ashworth, A. C. and Willenbring, J. K. 1998. Fossil beetles and climate change at the Sixmile Creek site, Ithaca, New York. American Paleontologist 6: 2-3.

Ashworth, A., Hart, C., Harwood, D., McKelvey, B., Webb, P., and Wilson, G.(contributors). 1998. Land-based Tertiary and Quaternary Records, In: A. Grunow and A. Leventer (eds.), Geological and geophysical investigations of the East Antarctic margin. BPRC Workshop Report, February 21-23, 1997, Ohio State University, Columbus., Ohio.

Ashworth, A.C., Schwert, D.P., and Reiss, R.A. 1996. Biogeography of arctic beetles: integrating the results of paleontological and molecular population genetic studies. Arctic Insect News 7: 12-15.

Ashworth, A.C., Benton, R.C., Biek, R.F., Murphy, E.C., Shurr, G.W., Stevens, K.K., and Terry, D.O. 1996. A field guide to the Tertiary Tectonism in the northern Great Plains: road log, field trip 1. In (Paterson, C.J. And Kirchner, J.G., eds ). Guidebook To The Geology Of The Black Hills, South Dakota. South Dakota School of Mines and Technology Bulletin 19: 9-18.

Shurr, G.W., Ashworth, A.C., Benton, R., Murphy, E.C., and Biek, R. F. 1996. Regional framework for Tertiary tectonism in the northern Great Plains. In (Paterson, C. J. And Kirchner, J. G., eds.) Guidebook To The Geology Of The Black Hills, South Dakota. South Dakota School of Mines and Technology Bulletin 19: 129-134.

Ashworth, A.C. 1995. Ice Age Insects. Ecology 76 (2): 667-668. (Book Review).