Brenckle, Marshall, et al. 1982. Calcareous microfossils from the Mississippian Keokuk Limestone and adjacent formations, Upper Mississippi River Valley: their meaning for North American and intercontinental correlation. 15 63, 3 Text-figures, 2 tables and 10 plates.
Place:
Jersey County, Illinois, United States, North America
Geologic Age:
Paleozoic / Mississippian / Early / Osagean
Record Last Modified:
17 Oct 2024
Stratigraphy:
Osage Group / Keokuk Ls
Taxonomy:
Biota
Published Name:
Asphaltina ? cordillerensis ? Mamet in Petryk & Mamet, 1972