Where: illinois (41.9° N, 89.4° W: paleocoordinates 22.0° S, 63.2° W)
• coordinate stated in text
• hand sample-level geographic resolution
When: Mifflin Formation (Platteville Group), Blackriveran (457.3 - 449.6 Ma)
• formation-level stratigraphic resolution
Environment/lithology: marine; lithified, argillaceous wackestone
Size classes: macrofossils, mesofossils, microfossils
Reposited in the UNSM
Collection methods: bulk, chemical, acetic,
Primary reference: R. C. Gutschick. 1954. Holothurian sclerites from the Middle Ordovician of Northern Illinois. Journal of Paleontology 28(6):827-829 [L. Villier/L. Villier/L. Villier]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 97881: authorized by Loic Villier, entered by Loic Villier on 05.09.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
| Holothuroidea | |
Thuroholia croneisi n. sp., Thuroholia cribriformis n. sp.
Thuroholia croneisi n. sp. Gutschick 1954 sea cucumber
Thuroholia cribriformis n. sp. Gutschick 1954 sea cucumber | |