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: Edwardsille 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: prodelta; 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 8127: authorized by John Alroy, entered by Mike Sommers on 22.06.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Rhynchonellata | |
Rhynchopora beecheri George 1904 | |
Strophomenata | |
Echinoconchus alternatus Norwood and Pratten 1855 | |
Gastropoda | |
Platyceratidae indet. Hall 1859 snail | |
Bivalvia | |
| |
Pseudaviculopecten indianensis scallop | |
Ostracoda | |
Cavellinidae indet. Egorov 1950 ostracod
Cavellina sp. Coryell 1928 ostracod | |
Bairdia sp. M'Coy 1844 ostracod | |
cf. Quasillitidae indet. Coryell and Malkin 1936 ostracod
Graphiadactyllis sp. ostracod | |
Crinoidea | |
Histocrinus coreyi Sea lily
Scytalocrinus robustus Sea lily | |
Cyathocrinites multibrachiatus Sea lily | |
Decadocrinus depressus Sea lily | |
Taxocrinus colletti Sea lily | |
Platycrinites hemisphericus Sea lily | |
Gilbertsocrinus tuberosus Sea lily | |
Ophiuroidea | |
Aganaster gregarius Meek and Worthen 1869 brittle star | |
Anthozoa | |
Cladochonus sp. M'Coy 1847 tabulate coral |