Where: Shannon County, Missouri (37.9° N, 92.8° W: paleocoordinates 21.3° S, 86.8° W)
• outcrop-level geographic resolution
When: Missisquoia trilobite zone, Eminence Formation, Trempealeauan (492.5 - 485.4 Ma)
• Given as Lower Chert of the Gasconade. However, Missisquoia trilobite zone is the top of the underlying Eminence
• formation-level stratigraphic resolution
Environment/lithology: dolomite
Size classes: macrofossils, mesofossils
Preservation: replaced with silica
Collected by E.O. Ulrich & H.E. Dickhaut in 20/09/1905; reposited in the USNM
Primary reference: J., J.r. Pojeta, M. J. Vendrasco, and G. Darrough. 2010. Upper Cambrian chitons (Mollusca, Polyplacophora) from Missouri, USA. Bulletins of American Paleontology (379)1-182 [P. Wagner/P. Wagner/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 98340: authorized by Pete Wagner, entered by Pete Wagner on 01.10.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Polyplacophora | |
"Preacanthochiton depressus" = Chelodes
"Preacanthochiton depressus" = Chelodes chiton | |
Gastropoda | |
Gasconadia putilla, "Jarlopsis conicus" = Euconia conicus
Gasconadia putilla Sardeson 1896 snail "Lophospira with swollen lip" in Ulrich's notes; observed in NMNH collections
"Jarlopsis conicus" = Euconia conicus Heller 1954 snail Eotomaria sp. in Ulrich's notes; observed in NMNH collections
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