Where: Minnesota (44.5° N, 92.9° W: paleocoordinates 19.6° S, 70.9° W)
• outcrop-level geographic resolution
When: Shakopee Formation, Cassinian (478.6 - 468.1 Ma)
• AGE: Cassinian; refined by A. Hendy (6/2009) on the basis of biostratigraphic data.
• bed-level stratigraphic resolution
Environment/lithology: lithified, dolomitic, ooidal, gray, cherty/siliceous limestone
Size class: macrofossils
Preservation: replaced with dolomite, replaced with silica
Primary reference: C. R. Stauffer. 1937. A diminutive fauna from the Shakopee Dolomite (Ordovician) at Cannon Falls, Minnesota. Journal of Paleontology 11(1):55-60 [P. Wagner/P. Wagner]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 56647: authorized by Pete Wagner, entered by Pete Wagner on 21.11.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
"Orygoceras eburneolum n. sp." = Endoceras eburneolum, Cameroceras inopinatum n. sp.
"Orygoceras eburneolum n. sp." = Endoceras eburneolum Stauffer 1937
Cameroceras inopinatum n. sp. | |
"Deltoceras tantillum n. sp." = Stylocyrtoceras tantillum
"Deltoceras tantillum n. sp." = Stylocyrtoceras tantillum Stauffer 1937 | |
Tergomya | |
Archinacella simplex Billings 1865 | |
Gastropoda | |
Hormotoma cassina, "Hormotoma cannonensis n. sp." = Plethospira cannonensis
Hormotoma cassina Whitfield 1897 snail
"Hormotoma cannonensis n. sp." = Plethospira cannonensis Stauffer 1937 snail | |
"Lophospira perelegans n. sp." = Lophospira perangulata, "Lophospira vetusta n. sp." = Lophospira perangulata
"Lophospira perelegans n. sp." = Lophospira perangulata Hall 1847 snail
"Lophospira vetusta n. sp." = Lophospira perangulata Hall 1847 snail | |
Euomphalopsis depressa n. sp.
Euomphalopsis depressa n. sp. Stauffer 1937 snail | |
Raphistoma shakopeense n. sp., "Raphistoma parvum n. sp." = Ceratopea parvum, Ceratopea pygmaea n. sp.
Raphistoma shakopeense n. sp. Stauffer 1937 snail
"Raphistoma parvum n. sp." = Ceratopea parvum Stauffer 1937 snail | |
"Eccyliomphalus transversocordatus n. sp." = Lecanospira transversocordatus
"Eccyliomphalus transversocordatus n. sp." = Lecanospira transversocordatus Stauffer 1937 snail |