Loc. M-05: top of low hill, SW┬╝ S13 T40N R2W (Ordovician of the United States)

Where: Crawford County, Missouri (38.0° N, 91.4° W: paleocoordinates 23.4° S, 81.0° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Symphysurina bulbosa trilobite zone, Van Buren Member (Gasconade Formation), Gasconadian (485.4 - 477.7 Ma)

• member-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified chert and dolomite

• Strata are in pockets of the Ozark Uplift.

Preservation: original calcite, replaced with silica

Primary reference: B. L. Stinchcomb. 1986. New Monoplacophora (Mollusca) from Late Cambrian and Early Ordovician of Missouri. Journal of Paleontology 60(3):606-626 [M. Patzkowsky/P. Borkow/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 157090: authorized by Pete Wagner, entered by Pete Wagner on 05.06.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

• The taxonomic list may not include unbublished taxa and stromatolites that are found in the formation/collection but are not described
Tergomya
 Hypseloconida -
Hypseloconus ozarkensis Ulrich et al. 1931
Polyplacophora
 Paleoloricata - Mattheviidae
Robustum nodum Stinchcomb and Darrough 1995 chiton