St. Peter Sandstone of Southeastern Minnesota: Fountain (Ordovician of the United States)

Where: Fillmore County, Minnesota (43.7° N, 92.1° W: paleocoordinates 19.3° S, 63.2° W)

• coordinate based on political unit

• local area-level geographic resolution

When: St. Peter Sandstone Formation, Blackriveran (457.3 - 449.6 Ma)

• formation-level stratigraphic resolution

Environment/lithology: coastal; sandstone

• Siliciclastic indet., probably shallow coastal: very shallow water, perhaps 15 feet deep. Environmental call by T. Hanson.
• "[W]ell-sorted, well-rounded, fine to medium quartz sand and rare thin beds of shale and coarse sand (Duke, 1921; Thiel, 1935)." From J.M. Mazullo and R. Ehrlich, 1987. "The St. Peter Sandstone of Southeastern Minnesota: mode of deposition." Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Saint Paul, Minnesota Geological Survey Report of Investigations 35, p. 44-50. R. E. Sloan, ed.

Size class: macrofossils

Primary reference: R. E. Sloan. 1987. The St. Peter Sandstone of Southeastern Minnesota: Fauna. Middle and Late Ordovician Lithostratigraphy and Biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35:50-51 [S. Holland/T. Hanson/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 23088: authorized by Steven Holland, entered by Tori Hanson on 09.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Lingulata
 Lingulida - Obolidae
"Lingula morsei" = Lingulella morsensis
"Lingula morsei" = Lingulella morsensis Winchell 1880
"Lingula" morsei
Rhynchonellata
 Orthida - Plectorthidae
Doleroides pervetus
Gastropoda
 Euomphalina - Holopeidae
Holopea obliqua, Holopea paludiniformis
Holopea obliqua Hall 1847 snail
Holopea paludiniformis Hall 1847 snail
[entered as Holopea paludinaeformis]
 Murchisoniina - Lophospiridae
"Lophospira tricarinata" = Lophospira perangulata
"Lophospira tricarinata" = Lophospira perangulata Hall 1847 snail
 Murchisoniina - Hormotomidae
Hormotoma gracilis
Hormotoma gracilis Hall 1847 snail