PBDB Collection

Minneapolis, Vanuxemia beds (Ordovician of the United States)

Where: Minnesota (45.0° N, 93.3° W: paleocoordinates 17.8° S, 62.8° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Phragmodus undatus conodont zone, Quimbys Mill Formation, Turinian (457.3 - 453.8 Ma)

• Vanuxemia beds.

• group of beds-level stratigraphic resolution

Environment/lithology: limestone

• Environmental call by T. Hanson

• "12 to 14 feet thick . . . medium to thin beds of limestone and dolomite separated by thin shale laminae." Lithology from O. L. Karklins. 1987. Bryozoa from Rocklandian (Middle Ordovician) rocks of the Upper Mississippi Valley region. Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 :173-176, R.E. Sloan, ed.

Size class: macrofossils

Preservation: mold/impression

Reposited in the USNM

• "[B]ased on a review of the Sardeson Collection at the University of Minnesota, Weiss (1953), Ulrich and Scofield (1895), the unpublished work of Levorson and Gerk, and the list in Stauffer and Thiel (1941)."

Primary reference: E. O. Ulrich and W. H. Scofield. 1897. The Lower Silurian Gastropoda of Minnesota. The Paleontology of Minnesota 39(2):813-1081 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 194139: authorized by Pete Wagner, entered by Pete Wagner on 14.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Gastropoda
Murchisoniina - Trochonematidae	Trochonema vagrans, Trochonema rugosa Trochonema vagrans Ulrich and Scofield 1897 snail Trochonema rugosa Ulrich and Scofield 1897 snail
Murchisoniina - Lophospiridae	Eunema centralis, "Lophospira helicteres" = Eunema helicteres, Lophospira serrulata, "Lophospira conradana" = Lophospira ventricosa Eunema centralis Ulrich and Scofield 1897 snail "Lophospira helicteres" = Eunema helicteres Salter 1859 snail Lophospira serrulata Salter 1859 snail "Lophospira conradana" = Lophospira ventricosa Hall 1847 snail
Murchisoniina - Eotomariidae	Liospira obtusa, Liospira angustata, "Eotomaria supracingulata" = Paraliospira supracingulata, Eotomaria dryope, Clathrospira subconica Liospira obtusa Ulrich and Scofield 1897 snail Liospira angustata Ulrich and Scofield 1897 snail "Eotomaria supracingulata" = Paraliospira supracingulata Billings 1857 snail Eotomaria dryope Billings 1865 snail Clathrospira subconica Hall 1847 snail
Bellerophontida - Sinuitidae	"Protowarthia rectangularis" = Sinuites rectangularis "Protowarthia rectangularis" = Sinuites rectangularis Ulrich and Scofield 1897 snail
Bellerophontida - Plectonotidae	Tetranota sexcarinata, Tetranota obsoleta, Tetranota macra Tetranota sexcarinata Ulrich and Scofield 1897 snail Tetranota obsoleta Ulrich and Scofield 1897 snail Tetranota macra Ulrich and Scofield 1897 snail
Bellerophontida - Bucaniidae	"Conradella fimbriata" = Phragmolites fimbriata "Conradella fimbriata" = Phragmolites fimbriata Ulrich and Scofield 1897 snail
Tergomya
Scenelloidea - Scenellidae	Scenella compressa Scenella compressa Ulrich and Scofield 1897
Archinacellida - Archinacellidae	Archinacella depressa n. sp., Archinacella powersi, "Palaeacmaea humilis" = Floripatella humilis Archinacella depressa n. sp. Ulrich and Scofield 1897 Archinacella powersi Ulrich and Scofield 1897 "Palaeacmaea humilis" = Floripatella humilis Ulrich and Scofield 1897
Tryblidiida - Tryblidiidae	"? Scenella exserta" = Tryblidium exserta "? Scenella exserta" = Tryblidium exserta Sardeson 1892