Lingula carbonaria Shumard & Swallow 1858

Taxonomy

Brachiopod

Kingdom: Animalia
Phylum: Brachiopoda Dumeril 1806
Class: Lingulata Gorjansky and Popov 1985
Order: Lingulida Waagen 1885
Family: Lingulidae Gray 1840
Genus: Lingula
Species: Lingula carbonaria
Author Citation Shumard & Swallow 1858

Geological Time Scale

Eon: Phanerozoic
Era: Paleozoic
Period: Carboniferous
Sub Period: Mississippian
Epoch: Late
International Age: Serpukhovian

Stratigraphy

Big Snowy Group
Heath Formation

Provenance

Acquired by: Purchase/Trade

Dimensions

Length: 9 mm

Location

Bear Gulch
Fergus County
Montana
United States

• bear gulch
• carboniferous
• fergus
• lingula
• serpukhovian
• tff-oilshale-br2554

Comments

Taxonomy from fossilworks.org.

Synonyms: Lingula mytiloides Meek and Worthen 1873 and Lingula umbonata White 1884.

From Lutz-Garihan 1979, p. 458: "Shell small, ovate, very light colored, preserved mostly as external or internal molds of undetermined valves. Posterior margins smoothly rounding into lateral margins; greatest width at mid-length or slightly toward anterior. Convexity of valve greatest along antero-posterior line at mid-width, and at apex, convexity then decreases laterally so that cross-section is almost an upside-down V. Surface marked by closely spaced growth lines. Interior of valve not seen.”

Identified by oilshale using Lutz-Garihan 1979.

References:

Shumard, B. F. and Swallow, G.C. (1858) Descriptions of new fossils from the Coal Measures of Missouri and Kansas. Academy of Science of St. Louis Transactions 1:198-227.

Yancey, T. E.  (1978) Brachiopods and mollusca of the Lower Permian Arcturus Group, Nevada and Utah, Part 1: brachiopods, scaphopods, rostroconchs, and bivalves. Bulletins of American Paleontology 74(303):257-367 

Lutz-Garihan, A.B. (1979) Brachiopods from the Upper Mississippian Bear Gulch Limestone of Montana. Compte Rendu, Neuvième Congrès International de Stratigraphie et de Géologie du Carbonifère. Vol.  5: 457–467.