MF-1, upper zone beds, 1.2 km east, 1 km south of Marble Hill (Ordovician of the United States)

Also known as Roadcuts, south side of Missouri Highway no. 34

Where: Bollinger County, Missouri (37.3° N, 90.0° W: paleocoordinates 25.2° S, 76.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Upper Beds Member (Smithville Formation), Cassinian (482.3 - 470.0 Ma)

• N. American E Fauna, Reutterodus andinus zone, middle Blackhillsian

• member-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: bulk, hydrochloric

Primary reference: M. F. Fix. 1975. The Paleontology and stratigraphy of the Smithville and Blackrock Formations of Southeastern Missouri. M.S. Thesis, Geology, Washington University 1-147 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 75520: authorized by Pete Wagner, entered by Pete Wagner on 15.10.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Turbonellidae "sp. #1"
Cephalopoda
  -
Cephalopoda indet.
Cephalopoda indet. Cuvier 1797
Gastropoda
 Murchisoniina - Hormotomidae
Hormotoma indet., Hormotoma aff. artemesia
Hormotoma indet. Salter 1859 snail
includes n. subgen #1 (2) & murchisonid gen et. sp. indet.
Hormotoma aff. artemesia Billings 1865 snail
 Murchisoniina - Lophospiridae
"Loxoplocus (Lophospira) indet." = Lophospira, Lophospira perangulata
"Loxoplocus (Lophospira) indet." = Lophospira Whitfield 1886 snail
Lophospira perangulata Hall 1847 snail
 Murchisoniina - Straparollinidae
? Straparollina sp., Straparollina cassina
? Straparollina sp. Billings 1865 snail
Straparollina cassina Whitfield 1886 snail
 Murchisoniina - Eotomariidae
"Murchisonia (Turritoma) cf. acrea" = Turritoma acrea, Clathrospira indet., "Clathrospira virguncula" = Clathrospira virguncula, "Clathrospira laflinensis" = Clathrospira virguncula
"Murchisonia (Turritoma) cf. acrea" = Turritoma acrea Billings 1865 snail
Clathrospira indet. Ulrich and Scofield 1897 snail
"Clathrospira virguncula" = Clathrospira virguncula Billings 1865 snail
"Clathrospira laflinensis" = Clathrospira virguncula Billings 1865 snail
 Murchisoniina - Subulitidae
Fusispira cf. obesus
Fusispira cf. obesus Whitfield 1886 snail
 Euomphalina - Macluritidae
"Maclurites smithvillensis" = Teiichispira ponderosa
"Maclurites smithvillensis" = Teiichispira ponderosa Billings 1865 snail
 Euomphalina - Raphistomatidae
Ceratopea sp., Ceratopea unguis, "Roubidouxia aff. depressa" = Ceratopea depressa
Ceratopea sp. Ulrich 1911 snail
Ceratopea unguis Yochelson and Bridge 1957 snail
1 shell, 7 opercula
"Roubidouxia aff. depressa" = Ceratopea depressa Butts 1926 snail
 Euomphalina - Helicotomidae
"? Lophonema (? Lophonema) indet." = Lophonema, Lophonema aff. circumlirata, Lophonema taneyensis, "? Polhemia "n. sp."" = Lophonema
"? Lophonema (? Lophonema) indet." = Lophonema Purdue and Miser 1916 snail
Lophonema aff. circumlirata Whitfield 1886 snail
Lophonema taneyensis Cullison 1944 snail
"? Polhemia "n. sp."" = Lophonema Purdue and Miser 1916 snail
Ostracoda
 Leperditicopida - Isochilinidae
Ceratoleperditia sp.
Ceratoleperditia sp. Harris 1960 ostracod
 Leperditicopida - Leperditiidae
? Eoleperditia "sp. A"
? Eoleperditia "sp. A" Swartz 1949 ostracod