Where: Wisconsin (43.0° N, 88.0° W: paleocoordinates 24.3° S, 50.1° W)
• coordinate based on political unit
• local area-level geographic resolution
When: Racine Dolomite Formation, Wenlock to Wenlock (433.4 - 423.0 Ma)
• General age of community stated as Racine Dolomite [and presumably equivalents?], Late Wenlock to Ludlow.
• formation-level stratigraphic resolution
Environment/lithology: deep subtidal ramp; dolomitic, argillaceous lime mudstone
•SEP environmental call based on given information and regional context
Collection methods: Relative abundances given for trilobites. The data are for collections amassed over many years. Other taxa not listed include brachiopods, pisocrinid crinoids, nautiloids, gastropods, rugose corals, trace fossils.
Primary reference: D. G. Mikulic. 1999. Silurian trilobite associations in North America. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 793-798 [M. Foote/M. Foote/M. Foote]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 24937: authorized by Michael Foote, entered by Michael Foote on 23.08.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
| |
Trilobita | |
Acidaspis sp. Murchison 1839 trilobite
Leonaspis sp. Richter and Richter 1917 trilobite
Ceratocephala cf. goniata Warder 1838 trilobite | |
"Proetus handwerki" = Pseudogerastos handwerki
"Proetus handwerki" = Pseudogerastos handwerki Weller 1907 trilobite | |
Harpidella sp. M'Coy 1849 trilobite | |
Bumastus sp. Murchison 1839 trilobite
Bumastus cf. cuniculus Hall 1868 trilobite | |
Illaenoides triloba trilobite | |
Trochurus welleri trilobite
Dicranopeltis decipiens Weller 1907 trilobite | |
Cheirurus cf. niagarensis Hall 1868 trilobite
Deiphon americanus trilobite
Sphaerexochus cf. romingeri Hall 1868 trilobite | |
"Sthenarocalymene celebra" = Calymene celebra
"Sthenarocalymene celebra" = Calymene celebra Raymond 1916 trilobite | |
Dalmanites illinoisensis trilobite
Dalmanites platycaudatus trilobite | |
Eophacops handwerki trilobite |