The Rome Formation is a geologic formation in Alabama, Georgia, and Tennessee. It preserves fossils dating back to the Cambrian period.
The Kinzers Formation is a geologic formation in Pennsylvania. It preserves fossils dating back to the Cambrian Period.
The Conasauga Formation is a geologic formation in Georgia. It preserves fossils dating back to the Cambrian period.
The Jordan Sandstone is a geologic formation in Wisconsin. It preserves fossils dating back to the Cambrian period.
The Dotsero Formation is a geologic formation in Colorado. It preserves fossils dating back to the Cambrian period.
The Sawatch Formation is a geologic formation in eastern Colorado. It is a sedimentary sequence formed approximately 530 million years ago during a marine transgression. It preserves fossils dating back to the Cambrian period. It is composed of glauconitic and quartz-rich sandstone.
The Lead Bell Shale is a geologic formation in Idaho. It preserves fossils dating back to the Cambrian period.
The Spence Shale is the middle member of the Langston Formation in southeastern Idaho and northeastern Utah. It is exposed in the Bear River Range, the Wasatch Range and the Wellsville Mountains. It is known for its abundant Cambrian trilobites and the preservation of Burgess Shale-type fossils.
The Elkhead Limestone is a geologic formation in Idaho. It preserves fossils dating back to the Cambrian period.
The Lakeview Formation is a geologic formation in Idaho. It preserves fossils dating back to the Cambrian period.
The Rennie Shale is a geologic formation in Idaho. It preserves fossils dating back to the Cambrian period.
The St. Charles Formation is a geologic formation in Idaho. It preserves fossils dating back to the Cambrian period.
The Ute Formation is a geologic formation in Idaho. It preserves fossils dating back to the Cambrian period.
The Nopah Formation is a geologic formation in Utah. It preserves fossils dating back to the Cambrian period.
The Notch Peak Formation is a geologic formation in Utah. It preserves fossils dating back to the Cambrian period.
The Orr Formation is a geologic formation in Utah. It preserves fossils dating back to the Cambrian period.
The Dunderberg Shale is a geologic formation in Nevada and Utah.
The Carrara Formation is a geologic formation in California and Nevada. It preserves fossils dating back to the Cambrian period.
The Latham Shale is a geologic formation in California. It preserves fossils dating back to the Cambrian period.
The Mount Whyte Formation is a stratigraphic unit that is present on the western edge of the Western Canada Sedimentary Basin in the southern Canadian Rockies and the adjacent southwestern Alberta plains. It was deposited during Middle Cambrian time and consists of shale interbedded with other siliciclastic rock types and limestones. It was named for Mount Whyte in Banff National Park by Charles Doolittle Walcott, the discoverer of the Burgess shale fossils, and it includes several genera of fossil trilobites.
