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Galena - Ion - St. James, USA
| Group | Galena |
|---|---|
| Formation | Ion |
| Member | St. James |
| Age: | 461 - 450 Ma Ordovician |
| Interval | Kirkfieldian |
| Lithology | shale |
| Number of Collections | 5 |
| Number of Occurrences | 180 |
Recorded Sample Locations
| Location | Region | Stratigraphic Name |
|---|---|---|
| Spechts Ferry Formation Ostracodes of Iowa | Boone County, Iowa, USA | Galena - Ion - St. James |
| Mifflin Formation Echinoderms of the Upper Mississippi Valley | Clinton County, Iowa, USA | Galena - Ion - St. James |
| St. Peter Sandstone Cephalopods | Grant County, Wisconsin, USA | Galena - Ion - St. James |
Associated Units
| Stratigraphic Name | Age | Lithology | Occurrence Records |
|---|---|---|---|
| Blanding | 441 - 433 Ma Silurian | lime mudstone/wackestone, lime mudstone/packstone, wackestone/grainstone, dolomite | 56 |
| Glenwood | 461 - 450 Ma Ordovician | 127 | |
| Gower | 433 - 423 Ma Silurian | carbonate | 9 |
| Grand Detour | 461 - 450 Ma Ordovician | limestone | 147 |
| Hopkinton | 439 - 433 Ma Silurian | wackestone | 55 |
| Hopkinton - Farmers Creek | 439 - 433 Ma Silurian | wackestone/packstone, packstone, packstone/grainstone, grainstone/packstone, dolomite | 219 |
| Hopkinton - Sweeney | 441 - 439 Ma Silurian | lime mudstone/packstone | 11 |
| Mifflin | 461 - 450 Ma Ordovician | limestone | 161 |
| Nachusa | 461 - 450 Ma Ordovician | 157 | |
| Pecatonica | 461 - 450 Ma Ordovician | limestone | 110 |
| Quimbys Mill | 461 - 450 Ma Ordovician | limestone/dolomite, "limestone" | 194 |
| Scotch Grove - Welton | 433 - 427 Ma Silurian | wackestone, wackestone/packstone, packstone/wackestone, dolomite | 294 |
| Spechts Ferry | 461 - 450 Ma Ordovician | shale/"limestone", "shale" | 132 |
| St. Peter Sandstone | 461 - 450 Ma Ordovician | sandstone | 149 |
| Galena - Dubuque | 461 - 450 Ma Ordovician | limestone, wackestone | 68 |
| Galena - Dunleith - Beecher | 461 - 450 Ma Ordovician | limestone | 194 |
| Galena - Dunleith - Eagle Point | 461 - 450 Ma Ordovician | limestone | 198 |
| Galena - Dunleith - Fairplay | 461 - 450 Ma Ordovician | shale/"limestone" | 146 |
| Galena - Dunleith - Mortimer | 461 - 450 Ma Ordovician | limestone | 156 |
| Galena - Dunleith - Rivoli | 461 - 450 Ma Ordovician | limestone | 151 |
| Galena - Dunleith - Sherwood | 453 - 445 Ma Late/Upper Ordovician | limestone, wackestone | 180 |
| Galena - Dunleith - Wall | 461 - 450 Ma Ordovician | limestone | 168 |
| Galena - Dunleith - Wyota | 461 - 450 Ma Ordovician | limestone | 159 |
| Galena - Guttenberg | 461 - 450 Ma Ordovician | limestone, "limestone"/"shale" | 204 |
| Galena - Guttenberg - Glenhaven | 461 - 450 Ma Ordovician | mudstone/"shale" | 16 |
| Galena - Ion - Buckhorn | 461 - 450 Ma Ordovician | limestone | 203 |
| Galena - Spechts Ferry | 461 - 450 Ma Ordovician | limestone, "shale" | 58 |
| Galena - Wise Lake - Rifle Hill | 461 - 450 Ma Ordovician | dolomite | 65 |
| Galena - Wise Lake - Sinsinawa | 461 - 450 Ma Ordovician | limestone | 155 |
| Maquoketa - Brainard Shale | 450 - 444 Ma Paleozoic | shale | 43 |
| Maquoketa - Fort Atkinson Limestone | 452 - 450 Ma Late/Upper Ordovician | dolomite, "limestone" | 41 |
| Maquoketa - Neda | 450 - 444 Ma Paleozoic | 17 | |
| Maquoketa - Scales Shale - Clermont | 452 - 450 Ma Late/Upper Ordovician | limestone, "shale" | 111 |
| Maquoketa - Scales Shale - Elgin | 450 - 444 Ma Paleozoic | limestone, wackestone | 157 |
| Platteville - Grand Detour | 461 - 450 Ma Ordovician | limestone | 28 |
| Platteville - Pecatonica | 461 - 450 Ma Ordovician | limestone | 13 |
Recorded Fossils
References
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
