Cullison Loc. 57.1 (Ordovician of the United States)

Also known as Base of hill on north side of Moreau River, east side of US 63.

Where: Cole County, Missouri (38.6° N, 92.2° W: paleocoordinates 22.9° S, 78.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Rich Fountain Formation, Jefferson (485.4 - 468.1 Ma)

• Arengian half

• formation-level stratigraphic resolution

Environment/lithology: lithified, fine-grained, white, argillaceous, cherty/siliceous dolomite

• Massive to thin-bedded, white to buff to gray, fine grained argillaceous to coarsely crystalline dolomite.

Size class: macrofossils

Primary reference: J. S. Cullison. 1944. The stratigraphy of some Lower Ordovician formations of the Ozark uplift. University of Missouri School of Mines and Metallurgy Technical Series Bulletin 15(2):1-112 [P. Wagner/P. Wagner]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 56503: authorized by Pete Wagner, entered by Pete Wagner on 20.11.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Euomphalina - Raphistomatidae
Orospira elevata n. sp. Cullison 1944 snail
 Murchisoniina - Hormotomidae
Hormotoma dubia Donald 1899 snail
Tergomya
 Tryblidiida - Tryblidiidae
Proplina elongata Cullison 1944