Also known as Lower Verdi Member, St. Louis Fm., Keokuk Co., IO
Where: Keokuk County, Iowa (41.3° N, 92.2° W: paleocoordinates 8.5° S, 31.3° W)
• coordinate based on political unit
• local area-level geographic resolution
When: Verdi Member (St. Louis Formation), Chesterian (335.5 - 323.2 Ma)
• This data is from the lower Verdi Member of the St. Loius Fm. The St. Louis Fm. in Iowa is younger than the type St. Louis.
• member-level stratigraphic resolution
Environment/lithology: offshore shelf; lithified, burrowed, peloidal wackestone and packstone
Size class: macrofossils
Collection methods: This list comes from a guidebook.
Primary reference: B. J. Witzke, R. M. McKay, B. J. Bunker and F. J. Woodson. 1990. Stratigraphy and paleoenvironments of Mississippian strata in Keokuk and Washington Counties, southeast Iowa. Iowa Department of Natural Resources, Guidebook Series 10:1-105 [A. Miller/A. Webber/M. Uhen]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 3294: authorized by Arnold Miller, entered by Andrew Webber on 29.07.1999, edited by Pete Wagner and Austin Hendy
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Anthozoa | |
Syringopora sp. Goldfuss 1826 tabulate coral | |
Neozaphrentis sp. Grove 1935 horn coral | |
Calcisphaera laevis | |
Calcisphaera laevis Williamson 1880 | |
Crinoidea | |
Crinoidea indet. Miller 1821 Sea lily "indet. debris" - originally entered as "Crinoidea indet. debris"
| |
Strophomenata | |
Streptorhynchus sp. King 1850 | |
Rhynchonellata | |
Cleiothyridina sp. Buckman 1906
Composita trinuclea Hall 1856 | |
Girtyella sp. Weller 1911 | |
Bryozoa | |
Bryozoa indet. Ehrenberg 1831 | |
Stenolaemata | |
Fenestella sp. Lonsdale 1839 | |
Scaphopoda | |
Laevidentalium sp. Cossmann 1888 tusk shell | |
Bivalvia | |
| |
Aviculopecten sp. M'Coy 1851 scallop | |
Modiomorpha sp. Hall and Whitfield 1869 clam
Spathella sp. Hall 1885 clam | |
Cypricardella sp. Hall 1856 clam | |
Schizodus sp. King 1844 clam | |
Gastropoda | |
Gastropoda indet. Cuvier 1795 snail | |
""Bellerophontoidea" indet." = Bellerophontoidea2
| |
Bucanopsis sp. Ulrich and Scofield 1897 snail | |
Straparollus sp. de Montfort 1810 snail | |
Deuteropoda | |
Ostracoda indet. Latreille 1802 ostracod | |
Trilobita | |
Kaskia sp. Weller 1936 trilobite | |
Rhodophyceae | |
Fourstonella sp. Cummings 1955 | |
Foraminifera | |
Foraminifera indet. foram "indet. encrusters" - originally entered as "Foraminifera indet. encrusters"
| |
Endostaffella sp. Rozovskaya 1961 | |