Heath-Marginal Fauna, Fergus City, loc #13391, Heath Fm (Carboniferous of the United States)

Where: Fergus County, Montana (47.3° N, 109.1° W: paleocoordinates 3.8° N, 36.9° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Heath Formation, Chesterian (335.5 - 323.2 Ma)

• "upper Miss."

Environment/lithology: shallow subtidal; black, argillaceous limestone and shale

• "black fissile shale, weathers light grey, a few stringers of brown, avg. ls intt. of grey ls, fine grained [sic]. sample is from shale. marginal marine, shallow, this lithology dominates the unit at this locality [arrow from shale] BA1"

Size class: macrofossils

Primary reference: W. H. Easton. 1962. Carboniferous formations and faunas of central Montana. United States Geological Survey Professional Paper 348:1-126 [J. Alroy/M. Sommers/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 577: authorized by Arnold Miller, entered by Mike Sommers on 19.01.1999, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Easton, 1962"
Show authors, comments, and common names
Rhynchonellata
 Athyridida - Athyrididae
Composita sp.
Composita sp. Brown 1849
Strophomenata
 Productida - Productidae
Dictyoclostus sp.
Dictyoclostus sp. Muir-Wood 1930
Craniata
 Craniida - Craniidae
Crania sp.
Crania sp. Retzius 1781
Gastropoda
 Bellerophontida - Bellerophontidae
Retispira sp.
Retispira sp. Knight 1945 snail
 Bellerophontida - Euphemitidae
Euphemites sacajawensis
Euphemites sacajawensis Branson 1937 snail
Bivalvia
 Nuculanida - Polidevciidae
"Nuculana rugodorsata" = Phestia rugodorsata
"Nuculana rugodorsata" = Phestia rugodorsata Easton 1962 clam
 Nuculida - Nuculidae
"Nuculopsis (Palaeonucula) montanensis" = Palaeonucula
"Nuculopsis (Palaeonucula) montanensis" = Palaeonucula nut clam