Bear Gulch Brachiopod Fossil with Preserved Natural Shell

Part and Counterpart Specimen

Brachiopoda indet

Geological Time: Mississippian (~320 m.y.a.)

Size (25.4 mm = 1 inch): Fossil is 45 mm long by 30 mm across Matrix: 100 mm by 95 mm and 90 mm by 75 mm pair

Fossil Site: Heath Shale Formation, Bear Gulch Limestone, Fergus County, Montana

Fossil Code: BGF661

Price: Sold


Description: The Bear Gulch Limestone is a deposit of some 70 square km in extent and 30 m in depth that has been a source of one of the most diverse assemblages of fossil fish with some 110 species having been described over the past 30 years. Most were new to science, and provided a unique view of the marine environment of Mississippian times. Fine preservation of both fish and invertebrates is a hallmark of these deposits, presumably due to an anoxic depositional environment. This is a fine brachiopod with good detail. Note the natural sheen preserved on this fine specimen, indicating that the depositional environment was non-acidic.

Fossil Sales


Fossil Mall Navigation:
l Home l Fossils for Sale Map l Museum and Rare Fossils l How to Buy Fossils l

Navigate by Fossil Category:
l Trilobites
l Ammonites l Fish Fossils l Invertebrate Fossils l
l Crinoids and Echinoderms l Insect Fossils l Dinosaur and Reptile Fossils l
l Cambrian Explosion Fossils l Plant Fossils l Stromatolites l
l Vertebrate Fossils l Fossil Amber l Trace & Ichnofossils l

l Fossils and Paleotological Science Information l