Cedaria Zone, Dresbach Fm. (Cambrian of the United States)

Where: Wisconsin (44.5° N, 89.6° W: paleocoordinates 20.9° S, 83.0° W)

• coordinate based on political unit

When: Cedaria trilobite zone, Eau Claire Member (Dresbach Formation), Marjumian (504.5 - 497.0 Ma)

• "Cedaria zone"

Environment/lithology: transition zone or lower shoreface; sandstone

• "med. grained ss, intercalated with fine ss and sltst, some sh (50 ft.), mudcracks ripples. Nearshore (BA1)"

Size class: macrofossils

Primary reference: W. H. Twenhofel, G. O. Raasch, and F. T. Thwaites. 1935. Cambrian strata of Wisconsin. Geological Society of America Bulletin 46(11):1687-1744 [P. Wagner/P. Wagner]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 268: authorized by Jack Sepkoski, entered by Mike Sommers on 21.03.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• "W.H.Twenhofel, G.O.Raasch, F.T.Thwaites. 1935. Cambrian strata of Wisconsin. GSA Bull. 46:1687-1744."
Show authors, comments, and common names
Trilobita
 Ptychopariida - Norwoodiidae
Norwoodia sp.
Norwoodia sp. Walcott 1916 trilobite
 Ptychopariida - Crepicephalidae
Coosia sp.
Coosia sp. Walcott 1911 trilobite
 Ptychopariida - Lonchocephalidae
Lonchocephalus sp.
Lonchocephalus sp. Owen 1852 trilobite
 Ptychopariida - Menomoniidae
Menomonia sp.
Menomonia sp. Walcott 1916 trilobite
 Olenida - Cedariidae
Cedaria sp.
Cedaria sp. Walcott 1924 trilobite
Hyolitha
 Hyolithida - Hyolithidae
Hyolithes sp.
Hyolithes sp. d'Eichwald 1840
Lingulata
 Lingulida - Obolidae
Obolus sp., Lingulepis sp., Lingulella sp.
Obolus sp. Eichwald 1829
Lingulepis sp. Hall 1863
Lingulella sp. Salter 1866