Where: Montgomery County, Indiana (40.0° N, 86.9° W: paleocoordinates 17.2° S, 32.6° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Edwardsville Member (Muldraugh Formation), Chadian to Chadian (346.7 - 340.0 Ma)
• JA: the late Osagean is Chadian and Arundian according to Heckel and Clayton 2006
• bed-level stratigraphic resolution
Environment/lithology: delta front; lithified, shelly/skeletal siltstone
Collection methods: bulk, chemical, mechanical, sieve,
Primary reference: N. G. Lane, J. L. Matthews, E. G. Driscoll and E. L. Yochelson. 1973. Paleontology and paleoecology of the Crawfordsville fossil site (Upper Osagian: Indiana). University of California Publications in Geological Sciences 99:1-141 [J. Alroy/M. Sommers/M. Uhen]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 8115: authorized by John Alroy, entered by Mike Sommers on 20.06.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Gastropoda | |
Platyceratidae indet. Hall 1859 snail | |
Bivalvia | |
Euchondria ? grandis scallop | |
Pseudaviculopecten indianensis scallop | |
Acanthopecten procarboniferous scallop | |
Aviculopecten spinuliferus scallop | |
| |
Rhynchonellata | |
Spirifer sp., "Brachythyris suborbicularis" = Spirifer suborbicularis
Spirifer sp. Sowerby 1818
"Brachythyris suborbicularis" = Spirifer suborbicularis Hall 1858 | |
Strophomenata | |
Echinoconchus alternatus Norwood and Pratten 1855 | |
Marginirugus magnus Meek and Worthen 1861 | |
Orthotetes keokuk Hall 1858 | |
Ostracoda | |
Healdia sp. Roundy 1926 ostracod | |
Graphiadactyllis sp. ostracod | |
Bairdia sp. M'Coy 1844 ostracod | |
Trilobita | |
"Griffithides bufo" = Hesslerides bufo
"Griffithides bufo" = Hesslerides bufo Meek and Worthen 1870 trilobite | |
Ophiuroidea | |
Aganaster gregarius Meek and Worthen 1869 brittle star | |
Crinoidea | |
Scytalocrinus robustus Sea lily | |
Pachylocrinus aequalis Sea lily | |
Taxocrinus colletti Sea lily | |
Platycrinites hemisphericus Sea lily |