East Milligan, unit F (Carboniferous of the United States)

Where: Broadwater County, Montana (45.9° N, 111.8° W: paleocoordinates 9.8° S, 45.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: unit F Member (Sappington Formation), Kinderhookian (358.9 - 352.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, shelly/skeletal, calcareous shale and siltstone

• alternating shales and siltstones, sedimentary structures including channel units, cross strat, ripple marks; some calcareous beds and lenses containing brachs; coquinoid.

Primary reference: J. Rodriguez and R. C. Gutschick. 1967. Brachiopods from the Sappinton Formation (Devonian - Mississippian) of western Montana. Journal of Paleontology 41(2):364-384 [J. Alroy/M. Sommers/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 7139: authorized by John Alroy, entered by Mike Sommers on 02.05.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• only brachiopods collected
Show authors, comments, and common names
Rhynchonellata
 Spiriferinida - Syringothyrididae
Syringothyris hannibalensis