Where: Montana (47.2° N, 110.2° W: paleocoordinates 7.0° S, 80.0° W)
• coordinate based on political unit
When: Taenicephalus zone, Sage Member (Snowy Range Formation), Franconian (497.0 - 485.4 Ma)
• "Franconian, Taenicephalus zone (=upper Conaspis zone)"
• group of beds-level stratigraphic resolution
Environment/lithology: shallow subtidal; flat-pebble limestone
Size class: macrofossils
Primary reference: R. E. Grant. 1965. Faunas and stratigraphy of the Snowy Range formation (Upper Cambrian) in southwestern Montana and northwestern Wyoming. Geological Society of America Memoirs 96:1-171 [P. Wagner/P. Wagner/J. Ju]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 249: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998
Creative Commons license: CC BY (attribution)
Taxonomic list
| Eocrinoidea | |
|
Eocrinoidea indet. Jaekel 1918 | |
| Trilobita | |
|
Wilbernia sp. Walcott 1924 trilobite | |
Kendallina eryon, Orygmaspis sp., "Parabolinoides contractus" = Orygmaspis contracta, "Taenicephalus sp." = Taenicephalus, "Maustonia nasuta" = Taenicephalus, Croixana bipunctata
Kendallina eryon trilobite
"Parabolinoides contractus" = Orygmaspis contracta Frederickson 1949 trilobite originally entered as "Parabolinooides sp."
"Taenicephalus sp." = Taenicephalus Ulrich and Resser 1924 trilobite
"Maustonia nasuta" = Taenicephalus trilobite
Croixana bipunctata trilobite | |
| Helcionelloida | |
| Lingulata | |
|
Angulotreta sp. Palmer 1954 | |
|
Ceratreta sp. Bell 1941 | |
|
Lingulella desiderata Walcott 1898 | |
| Strophomenata | |
|
Billingsella perfecta Ulrich and Cooper 1936 | |
| Rhynchonellata | |
|
Eoorthis remnicha Winchell 1886 | |
|
Huenella texana Walcott 1905 | |