Biostratigraphy and paleoecology of Lower Paleozoic, Upper Cretaceous and Lower Tertiary rocks in U.S.Geological Survey New Madrid test wells, southeastern Missouri.
Reference:
Frederiksen,N.O. et al. (1982)
Biostratigraphy and paleoecology of Lower Paleozoic, Upper Cretaceous and Lower Tertiary rocks in U.S.Geological Survey New Madrid test wells, southeastern Missouri. Tulane Studies in Geology and Paleontology
Vol. 17 # 2 P. 23- 45