Trempealeau Fm., Lodi Mbr. (Cambrian of the United States)

Where: Wisconsin (44.5° N, 89.6° W: paleocoordinates 21.5° S, 79.3° W)

• coordinate based on political unit

When: Lodi Member (Trempealeau Formation), Trempealeauan (492.5 - 485.4 Ma)

• "Trempealeauan"

• member-level stratigraphic resolution

Environment/lithology: peritidal; siltstone

• "dolomitic slst (18ft) micaceous, some mudcracks, some edgewise congl., x-lamination. nearshore (BA1), cratonic"

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 256: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Twenhofel et al. 1935"
Show authors, comments, and common names
unclassified
  -
Prozacompsus sp.
Pterobranchia
 Dendroidea - Dendrograptidae
Dendrograptus sp.
Dendrograptus sp. Hall 1858 graptolite
Lingulata
 Lingulida - Obolidae
Westonia sp., Lingulella sp.
Westonia sp. Walcott 1901
Lingulella sp. Salter 1866
Gastropoda
 Eogastropoda - Sinuopeidae
"Dirhachopea sp." = Schizopea
"Dirhachopea sp." = Schizopea Butts 1926 snail
originally entered as "Dirachopea sp."
Artiopoda
 Aglaspidida - Aglaspididae
Aglaspis sp.
Aglaspis sp. Hall 1862
Trilobita
 Ptychopariida - Plethopeltidae
Plethopeltis sp., Stenopilus sp.
Plethopeltis sp. Raymond 1913 trilobite
Stenopilus sp. Raymond 1924 trilobite
 Ptychopariida - Catillicephalidae
Acheilops sp.
Acheilops sp. Ulrich 1931 trilobite
 Asaphida - Eurekiidae
Eurekia sp., Corbina sp.
Eurekia sp. Walcott 1924 trilobite
Corbina sp. trilobite
 Asaphida - Dikelocephalidae
Tellerina sp., Saukiella sp., Saukia sp., Dikelocephalus sp.
Tellerina sp. Ulrich and Resser 1933 trilobite
Saukiella sp. Ulrich and Resser 1933 trilobite
Saukia sp. Walcott 1914 trilobite
Dikelocephalus sp. Owen 1852 trilobite
 Corynexochida - Illaenidae
Illaenurus sp.
Illaenurus sp. Hall 1863 trilobite
 Harpetida - Entomaspididae
Entomaspis sp.
Entomaspis sp. Ulrich 1931 trilobite
originally entered as "Entomespis sp."