Where: Decatur County County, Indiana (39.3° N, 85.5° W: paleocoordinates 24.9° S, 54.8° W)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Brassfield Formation, Llandovery (443.4 - 433.4 Ma)
• Lower-middle Brassfield, i.e., below Lee Creek Member (Nicoll & Rexroad, 1968) at type locality and elsewhere in southeast Indiana, but above the Belfast Member (Rexroad, 1967) of Ohio and Kentucky, southeast Indiana: middle thin-bedded unit of Gordon & Ettensohn (1984), southwestern Ohio and adjacent Kentucky.
Environment/lithology: deep subtidal; lithified shale and lithified dolomite
Primary reference: T. J. Frest, C. E. Brett, and B. J. Witzke. 1999. Caradocian-Gedinnian echinoderm associations of Central and Eastern North America. Paleocommunities--a case study from the Silurian and Lower Devonian 638-783 [M. Foote/K. Koverman/P. Wagner]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 13291: authorized by Michael Foote, entered by Kimberly Koverman on 15.02.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Anthozoa | |
Halysites sp. von Waldheim 1813 tabulate coral | |
Favosites sp. Lamarck 1816 tabulate coral | |
Rugosa indet. horn coral | |
Heteractinida | |
Astraeospongium sp. Roemer 1860 | |
Cyclocystoidea | |
| |
Crinoidea | |
Crinoidea indet. Miller 1821 Sea lily | |
Calceocrinus sp. Hall 1852 Sea lily | |
Anartiocystis sp. Ausich and Schumacher 1984
Brockocystis nodosaria Foerste 1919 | |
Gastropoda | |
"Platyostoma clintonensis" = Platyostoma cliftonensis, Platyostoma daytonense, Cyclonema gyronemoides, Cyclonema daytonensis
"Platyostoma clintonensis" = Platyostoma cliftonensis Foerste 1909 snail
Platyostoma daytonense Foerste 1923 snail
Cyclonema gyronemoides Foerste 1923 snail
Cyclonema daytonensis Foerste 1899 snail | |
"Hormotoma subulata" = Murchisonia subulata
"Hormotoma subulata" = Murchisonia subulata Conrad 1842 snail | |
"Cyrtolites youngi" = Zonidiscus youngi
"Cyrtolites youngi" = Zonidiscus youngi Foerste 1889 snail | |
Bryozoa | |
Bryozoa indet. Ehrenberg 1831 | |
Brachiopoda | |
Brachiopoda indet. Cuvier 1805 | |
Rhynchonellata | |
Resserella cf. elegantula Dalman 1828 | |
Dalejina cf. hybrida Sowerby 1839 | |
"Platystrophia reversata" = Orthis biforata reversata
"Platystrophia reversata" = Orthis biforata reversata Foerste 1885 | |
Dolerorthis spp. Schuchert and Cooper 1931 | |
"? Rhynchonella scobina" = Camarotoechia neglecta
| |
Strophomenata | |
Leptaena cf. rhomboidalis Wahlenberg 1818 | |
Protomegastrophia sp. Caster 1939 | |
Leangella sp. Opik 1933 | |
Eoplectodonta prolongatus, "Eoplectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis
"Eoplectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis Wahlenberg 1818 | |
"Coolinia sp." = Fardenia (Coolinia)
"Coolinia sp." = Fardenia (Coolinia) Bancroft 1949 | |
Trilobita | |
Otarion sp. Zenker 1833 trilobite | |
Illaenus sp. Dalman 1827 trilobite |