Where: Indiana (39.1° N, 85.3° W: paleocoordinates 26.3° S, 53.6° W)
• coordinate based on political unit
• local area-level geographic resolution
When: Osgood Formation, Telychian to Telychian (438.5 - 430.5 Ma)
• "?Latest Llandoverian (C6) to Early Wenlockian...Portions of the Middle Osgood Limestone, Middle Osgood Shale, and Upper Osgood Shale = Osgood Member, Salamonie Dolomite.
• formation-level stratigraphic resolution
Environment/lithology: deep subtidal; shelly/skeletal, argillaceous wackestone
•
•SEP environmental call based on given information and knowledge of regional geology
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 26798: authorized by Michael Foote, entered by Michael Foote on 01.11.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Blastoidea | |
Cupulocorona osgoodensis blastoid
Cupulocorona gemmiformis Hall 1872 blastoid
Stephanocrinus cornetti blastoid | |
Crinoidea | |
Lyriocrinus sp. Hall 1852 Sea lily | |
Eucalyptocrinites sp. Goldfuss 1831 Sea lily | |
Pisocrinus (Pisocrinus) gemmiformis Sea lily | |
| |
Thalamocrinus sp. Miller and Gurley 1895 Sea lily | |
Lecanocrinus sp. Sea lily | |
Triamara spp. Tillman 1967
Triamara ventricosa Miller 1879 | |
Trematocystis sp., Holocystites (Holocystites) alternatus, Pustulocystis ornatissimus, Pentacystis sp.
Holocystites (Holocystites) alternatus Hall 1861
Pustulocystis ornatissimus Miller 1891
Pentacystis sp. Paul 1971 | |
Rhombifera | |
Caryocrinites sp. n. sp. Say 1825 | |
Trilobita | |
Dalmanitidae indet. Vogdes 1890 trilobite | |
Cephalopoda | |
Nautiloidea indet. Agassiz 1847 nautiloid | |
Gastropoda | |
Platyceras sp. Conrad 1840 snail | |
Rhynchonellata | |
Plectatrypa sp. Schuchert and Cooper 1930
Atrypa sp. Dalman 1828 | |
Dicoelosia sp. King 1850 | |
Isorthis sp. Kozlowski 1929 | |
Dalejina sp. Havlicek 1953 | |
Skenidioides sp. Schuchert and Cooper 1931 | |
Eospirifer sp. Schuchert 1913 | |
Ferganella sp. Nikiforova 1937 | |
Bryozoa | |
Bryozoa indet. Ehrenberg 1831 | |
Heteractinida | |
Astraeospongium sp. Roemer 1860 | |
Anthozoa | |
Favosites sp. Lamarck 1816 tabulate coral |