Kimmswick Limestone
Geologic formation in the United States
From Wikipedia, the free encyclopedia
The Kimmswick Limestone is an Ordovician geologic formation in Arkansas, Illinois and Missouri. Fossils occurring in the Kimmswick include corals, bryozoans, brachiopods, conodonts,[4] trilobites, crinoids and mollusks.[2]
TypeFormation
UnderliesCape Limestone, Maquoketa Group[1] or the Fernvale Limestone in Arkansas[2]
OverliesDecorah Shale[1] or Plattin Limestone[2]
PrimaryLimestone
| Kimmswick Limestone | |
|---|---|
| Stratigraphic range: Sandbian-Katian (Trentonian-Shermanian) ~ | |
Fossil from the Kimmswick Limestone (Missouri) | |
| Type | Formation |
| Underlies | Cape Limestone, Maquoketa Group[1] or the Fernvale Limestone in Arkansas[2] |
| Overlies | Decorah Shale[1] or Plattin Limestone[2] |
| Lithology | |
| Primary | Limestone |
| Other | Sandstone, dolomite[2] |
| Location | |
| Coordinates | 39.2°N 90.8°W |
| Approximate paleocoordinates | 23.1°S 66.0°W |
| Region | Arkansas, Illinois, Missouri |
| Country | United States |
| Type section | |
| Named for | Kimmswick, Jefferson County, Missouri[3] |
| Named by | Edward Oscar Ulrich |
| Year defined | 1904[1] |
  Kimmswick Limestone (the United States)  Kimmswick Limestone (Missouri) | |
Fossil content
The following fossils have been reported from the formation:[5]
Conodonts
- A. unicostatus[4]
- Acontiodus
- A. alveolaris[4]
- Ambalodus
- Aphelognathus
- Belodina
- B. compressa[4]
- Dichognathus
- Distacodus
- D. falcatus[4]
- Drepanodus
- Eoligonodina
- E. delicata[4]
- Icriodella
- I. superba[4]
- Keislognathus
- K. gracilis[4]
- Oistodus
- O. concinna[4]
- Phragmodus
- P. undatus[4]
- Prioniodina
- P. furcata[4]
- Rhynchognathodus
- Sagittodontus
- S. robustus[4]
- Scolopodus
- S. insculptus[4]
- Tetraprioniodus
- T. superbus[4]
- Trichonodella
- T. exacta[4]
- Zygognathus
Trilobites
- Eobronteus
- E. slocomi[6]
