Fine Paleozoic Bear Gulch Fossil Polychaete Annelid

Polychaete Worm Fossil

Phylum Annelida, Class Polychaeta

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

Size (25.4 mm = 1 inch): Fossil is 22 mm long (curve measure); Matrix: 70 mm by 60 mm mm

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

Fossil Code: BGF431

Price: $165.00

Polychaete Worm FossilDescription: 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 assemblagesAnnelida 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. Like the deposits of Mazon Creek, and extensive variety of worms are preserved at Bear Gulch. This specimen is a member of the Polychaeta, or Bristle Worms. The short bristles on this one are quite evident.

Reference: Trans. San Diego Soc Nat Hist, Vol 10. No 9 8 Nov 1979 pp 107-120.

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