St. Peter Sandstone, MN - Patzkowsky (Ordovician to of the United States)

Where: Minnesota (45.0° N, 93.3° W)

• Paleocoordinates: 2.2° S, 112.0° W (Wright 2013)

• coordinate based on nearby landmark

When: St. Peter Sandstone Formation, Whiterockian to Whiterockian (471.3 - 451.0 Ma)

• EZ 2

Environment/lithology: marine; lithified sandstone

• sandstone

Size class: macrofossils

Preservation: cast

Collection methods: List is originally from Sandeson 1892, 1896 but was revised by Sloan.

Primary reference: R. E. Sloan, W.F. Rice, E. Hedblom and J.M. Mazzullo. 1987. The Middle Ordovician Fossils of the Twin Cities, Minnesota. Minnesota Geological Survey, University of Minnesota, Guidebook Series no. 15 53-69 [M. Patzkowsky/Z. Krug]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 10767: authorized by Mark Patzkowsky, entered by Zack Krug on 20.06.2001

Creative Commons license: CC0 (CC0)

Taxonomic list

Rhynchonellata
 Orthida - Plectorthidae
Doleroides sp. Cooper 1930
Lingulata
 Lingulida - Lingulidae
"Lingula" sp. BruguiƩre 1797
Craniata
 Craniida - Craniidae
? Crania sp. Retzius 1781 craniid brachiopod
or Petrocrania
Stenolaemata
 Cryptostomata - Ptilodictyidae
? Ptilodictya sp. Lonsdale 1839
Bivalvia
 Protobranchia - Ctenodontidae
Ctenodonta sp. Salter 1852 clam
 Modiomorphida - Modiomorphidae
Modiolopsis 3 spp. Hall 1847 clam
Goniophora sp. Phillips 1848 clam
Orthodesma sp. Hall and Whitfield 1875 clam
 Cyrtodontida - Cyrtodontidae
Vanuxemia sp. Billings 1858 clam
Cyrtodonta 2 spp. Billings 1858 clam
Tergomya
 Cyrtonellida - Cyrtolitidae
Cyrtonellopsis sp. Yochelson 1958
Gastropoda
 Murchisoniina - Lophospiridae
Lophospira sp. Whitfield 1886 snail
 Murchisoniina - Hormotomidae
Hormotoma sp. Salter 1859 snail
 Eogastropoda - Sinuopeidae
Horiostomella sp. Perner 1903 snail
 Euomphalina - Ophiletidae
"Ophileta" sp. Vanuxem 1842 snail
 Euomphalina - Holopeidae
Holopea 2 spp. Hall 1847 snail
Cephalopoda
  - Orthoceratoidea
Kionoceras sp. Hyatt 1884
"Orthoceras" sp. Breynius 1832
 Endocerida - Endoceratidae
Cameroceras sp. Conrad 1842