USGS Loc. 648 (Devonian of the United States)

Where: Ralls County, Missouri (39.6° N, 91.4° W: paleocoordinates 27.2° S, 38.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Louisiana Limestone Formation, Late/Upper Famennian (364.7 - 360.7 Ma)

• Originally listed as Kinderhookian (Mississippian) age, changed by Sando et al. 1969. [JA: Siphonodella praesulcata Zone, i.e., latest Famennian, according to Chauffe and Nichols 1995]

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, dolomitic, gray, yellow, argillaceous lime mudstone and mudstone

• typically composed of dense blue-gray limestone beds separated by brown dolomitic clay partings, includes a few beds of yellow-brown calcareous mudstone or soft argillaceous limestone. [dense limestone here is characterized as lithographic = lime mudstone to me]

Reposited in the USGS

Primary reference: J. S. Williams. 1943. Stratigraphy and fauna of the Louisiana Limestone of Missouri. United States Geological Survey Professional Paper 203:1-133 [J. Alroy/M. Sommers/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 6057: authorized by John Alroy, entered by Mike Sommers on 21.01.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• Abundance: a = abundant, c = common, r = rare. Some taxa listed are done so from review of literature of area ["distribution table...prepared from information secured by the writer in his collecting, from an examination of all available published descriptions, and from information supplied by other collectors."]
Show authors, comments, and common names
Rhynchonellata
 Spiriferinida - Syringothyrididae
Syringothyris hannibalensis