Where: Washington County, Missouri (38.6° N, 90.7° W: paleocoordinates 22.7° S, 85.7° W)
• outcrop-level geographic resolution
When: Potosi Formation, Trempealeauan (492.5 - 485.4 Ma)
• The dolomite in which the fossils occur may or may not be in place stratigraphically. So, a rating of A through F indicates stratigraphic reliability with A = no question as to stratigraphic position of horizon and F = residual material of different ages. Reliability Index B
• formation-level stratigraphic resolution
Environment/lithology: reef, buildup or bioherm; lithified, cherty/siliceous dolomite
Preservation: original calcite, replaced with silica
Primary reference: B. L. Stinchcomb. 1986. New Monoplacophora (Mollusca) from Late Cambrian and Early Ordovician of Missouri. Journal of Paleontology 60(3):606-626 [M. Patzkowsky/P. Borkow/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 8905: authorized by Mark Patzkowsky, entered by Phil Borkow on 06.09.2000, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
Tergomya | |
Proplina suttoni n. sp.
Proplina suttoni n. sp. Stinchcomb 1986 | |
Gayneoconus echolsi n. gen. n. sp.1
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Hypseloconus bessemerense2 Ulrich et al. 1943 | |
Paragastropoda | |
Scaevogyra swezeyi2 Whitfield 1878 | |
Trilobita | |
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