MF-15. 2.3 km north and 3.4 km east of Marble Hill (Ordovician of the United States)

Also known as Hillside exposure along a gravel road.

Where: Bollinger County, Missouri (37.3° N, 89.9° W: paleocoordinates 25.2° S, 76.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lower Member (Cotter Formation), Cassinian (482.3 - 470.0 Ma)

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

• group of beds-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 75555: authorized by Pete Wagner, entered by Pete Wagner on 16.10.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rostroconchia
 Conocardiida - Eopteriidae
Eopteria cf. richardsoni
Gastropoda
 Euomphalina - Raphistomatidae
Ceratopea unguis
Ceratopea unguis Yochelson and Bridge 1957 snail
10 opercula & 1 shell
 Euomphalina - Helicotomidae
Lophonema aff. circumlirata, Lophonema taneyensis, "Polhemia indet." = Lophonema
Lophonema aff. circumlirata Whitfield 1886 snail
Lophonema taneyensis Cullison 1944 snail
"Polhemia indet." = Lophonema Purdue and Miser 1916 snail
 Murchisoniina - Straparollinidae
Straparollina cassina
Straparollina cassina Whitfield 1886 snail
 Murchisoniina - Lophospiridae
Lophospira sp., Lophospira perangulata
Lophospira sp. Whitfield 1886 snail
Lophospira perangulata Hall 1847 snail
Ostracoda
 Leperditicopida - Leperditiidae
? Eoleperditia "sp. B"
? Eoleperditia "sp. B" Swartz 1949 ostracod