| Ammonoid biostratigraphy across the Missourian-Virgilian boundary in the North American midcontinent and north-central Texas, (abstr.) |
Work, D.M.; and Boardman, D.R., II |
Geological Society of America, Abstract with Programs vol. 28, no. 1, p. 70, [reprinted in Oklahoma Geology Notes, vol. 57, no. 3, p. 115] |
1996 |
N/A
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| Ammonoids from the Robbins Shale Member, Lawrence Formation, Douglas Group of Kansas with implications for placement and correlation of the Missourian-Virgilian boundary, (abstr.) |
Work, D.M.; and Boardman, D.R., II |
Geological Society of America, Abstract with Programs vol. 27, no. 3, p. 97 |
1995 |
N/A
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| Biostratigraphy of middle and late Pennsylvanian (Desmoinesian-Virgilian) ammonoids |
Boardman, D.R., II; Work, D.M.; Mapes, R.H.; and Barrick, J.E. |
Kansas Geological Survey, Bulletin no. 232, 121 pages |
1994 |
View
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| Cyclothem ["digital"] correlation and biostratigraphy across the global Moscovian-Kasimovian-Gzhelian stage boundary interval (Middle-Upper Pennsylvanian) in North America and eastern Europe |
Heckel, P.H.; Alekseev, A.S.; Barrick, J.E.; Boardman, D.R.; Goreva, N.V.; Nemyrovska, T.I.; Ueno, Katsumi; Villa, Elisa; and Work, D.M. |
Geology vol. 35, no. 7, pp. 607-610 |
2007 |
N/A
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| Mapesites, a new Upper Pennsylvanian (Lower Virgilian) ammonoid from Kansas |
Work, D.M.; and Boardman, D.R. |
Journal of Paleontology vol. 77, no. 6, pp. 1195-1197 |
2003 |
N/A
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| The Upper Pennsylvanian (Missourian) ammonoid Pennoceras from the North American midcontinent |
Work, D.M.; Boardman, D.R., II; and Mapes, R.H. |
Journal of Paleontology vol. 81, no. 3, pp. 591-596 |
2007 |
N/A
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