Well-Preserved Utah Cambrian Fossil Sponge Pair

Crumillospongia sp

Phylum Porifera, Class Demospongia, Family Hazeliidae

Geological Time: Early/Middle Cambrian (~520 million years ago)

Size (25.4 mm = 1 inch): Fossils are 17 mm and 18 mm long by 11 mm and 14 mm across on a 63 mm by 55 mm matrix

Fossil Site: Wheeler Shale, Millard County, Utah

Code: ND001

Price: Sold


Crumillospongia Cambrian Fossil Sponges from UtahDescription: The Demosponge Crumillospongia belong to the family Hazeliidae. Because no attachment structures have ever been found, it remains unclear whether or not this early poriferan lived attached to the seafloor. Crumillospongia are somewhat rare in the Middle Cambrian of Utah, and very rare in the Burgess Shale. The Crumillospongia sponges on this plate have unusually good contrast.

Sponge fossils from the Cambrian Explosion are found in various Cambrian sites in North America, most notably the Burgess Shale of Canada, and the Cambrian strata of Utah, like this specimen. Many sponges are also described from the Chengjiang biota of China. Sponges are believed to have undergone repeated radiations in the Phanerozoic, and probably attained their largest diversity in the Cretaceous.

Fossil Sales

Click to enlarge

Crumillospongia Cambrian Fossil Sponges from Utah

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