Trilobites of the Sthenarocalymene celebra Assoc., Sugar Run Dolo., Will Co., IL (Silurian to of the United States)

Where: Illinois (41.7° N, 88.0° W: paleocoordinates 25.4° S, 51.0° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Sugar Run 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: shallow subtidal; dolomitic, argillaceous lime mudstone

• "BA 4 based on occurrence with the nearer shorline part of the Dicoelosia-Skenidioides Community...deposited under low energy conditions.. [state of articulation varies].."

•SEP environmental call based on given information and regional context

• "Community...occurs in well-bedded, slightly argillaceous, micritic, nonreef strata of the Racine Dolomite..."

Collection methods: Percent abundances given for trilobites. 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 24935: authorized by Michael Foote, entered by Michael Foote on 23.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Lichida - Lichidae
Dicranopeltis decipiens, Arctinurus sp., Trochurus welleri
Dicranopeltis decipiens Weller 1907 trilobite
Arctinurus sp. Castelnau 1843 trilobite
 Phacopida - Phacopidae
Eophacops handwerki
 Phacopida - Dalmanitidae
"Dalmanites platycaudatus" = Dalmanites, "Dalmanites illinoisensis" = Dalmanites, "Ommokris obex" = Dalmanites
"Dalmanites platycaudatus" = Dalmanites trilobite
"Dalmanites illinoisensis" = Dalmanites trilobite
"Ommokris obex" = Dalmanites trilobite
 Phacopida - Encrinuridae
Encrinurus egani
 Phacopida - Cheiruridae
Deiphon americanus, Sphaerexochus romingeri, Cheirurus cf. niagarensis
Sphaerexochus romingeri Hall 1868 trilobite
Cheirurus cf. niagarensis Hall 1868 trilobite
 Phacopida - Calymenidae
"Sthenarocalymene celebra" = Calymene celebra
"Sthenarocalymene celebra" = Calymene celebra Raymond 1916 trilobite
 Odontopleurida - Odontopleuridae
Ceratocephala cf. goniata
Ceratocephala cf. goniata Warder 1838 trilobite
 Corynexochida - Styginidae
Illaenoides triloba
 Corynexochida - Illaenidae
Bumastus sp.
Bumastus sp. Murchison 1839 trilobite
 Proetida - Proetidae
"Proetus handwerki" = Pseudogerastos handwerki
"Proetus handwerki" = Pseudogerastos handwerki Weller 1907 trilobite