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

Where: Crawford County, Missouri (38.0° N, 91.4° W: paleocoordinates 22.3° S, 86.5° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Plethopeltis Zone Member (Eminence Formation), Trempealeauan (501.0 - 485.4 Ma)

• The chert in which the fossils occur may or may not be in place stratigraphically. So, a rating of "A" through "F" indicates stratigraphi reliability with "A" = no question as to stratigraphic position of horizon and "F" = residual material of different ages. RATING: D

• formation-level stratigraphic resolution

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

• Strata are in pockets of the Ozark Uplift.

Size class: macrofossils

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 8695: authorized by Mark Patzkowsky, entered by Phil Borkow on 27.08.2000, edited by Pete Wagner

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
Gastropoda
 Bellerophontida - Tropidodiscidae
Strepsodiscus paucivoluta Calvin 1892 snail
Tergomya
 Tryblidiida - Tryblidiidae
Proplina arcua n. sp., Ozarkplina meramecensis n. gen. n. sp.
Proplina arcua n. sp. Stinchcomb 1986
Ozarkplina meramecensis n. gen. n. sp. Stinchcomb 1986
 Hypseloconida -
Hypseloconus compressus Ulrich et al. 1931