Frontier Formation

89 distinct taxa, from 173 fossil occurrences the Paleobiology Database records under this name, spanning 101–66 Mya.

Wyoming, Montana, Utah, Idaho · US

89 taxa · 173 fossils · 101–66 Mya

Filed under the Colorado Group. Members recorded: Belle Fourche, Upper, Wall Creek, Soap Creek, Belle Fourche Shale, Allen Hollow, Chalk Creek, Middle fine grained unit, Torchlight.

Macrostrat places this rock in the Mancos Group. Macrostrat’s own record

Frontier Formation — 42.83°N, 108.02°WFrontier Formation — 42.89°N, 105.92°WFrontier Formation — 41.60°N, 110.55°WFrontier Formation — 41.79°N, 110.54°WFrontier Formation — 42.83°N, 108.73°WFrontier Formation — 41.30°N, 110.55°WFrontier Formation — 41.56°N, 110.57°WFrontier Formation — 41.56°N, 119.57°WFrontier Formation — 40.58°N, 109.42°WFrontier Formation — 40.76°N, 111.40°WFrontier Formation — 43.64°N, 109.65°WFrontier Formation — 42.86°N, 106.56°WFrontier Formation — 42.97°N, 106.78°WFrontier Formation — 43.73°N, 106.76°WFrontier Formation — 41.77°N, 107.08°WFrontier Formation — 42.85°N, 106.54°WFrontier Formation — 42.85°N, 106.53°WFrontier Formation — 42.90°N, 107.44°WFrontier Formation — 41.96°N, 107.31°WFrontier Formation — 43.64°N, 106.65°WFrontier Formation — 43.00°N, 106.86°WFrontier Formation — 43.49°N, 106.51°WFrontier Formation — 43.58°N, 107.96°WFrontier Formation — 43.66°N, 111.33°WFrontier Formation — 44.59°N, 112.10°WFrontier Formation — 42.82°N, 108.08°WFrontier Formation — 44.51°N, 112.43°WFrontier Formation — 44.59°N, 112.16°WFrontier Formation — 44.84°N, 112.00°WFrontier Formation — 44.86°N, 112.00°WFrontier Formation — 43.67°N, 106.63°WFrontier Formation — 45.00°N, 107.53°WFrontier Formation — 44.16°N, 106.78°WFrontier Formation — 43.43°N, 103.55°WFrontier Formation — 41.72°N, 109.64°WFrontier Formation — 45.17°N, 107.72°WFrontier Formation — 45.45°N, 107.62°WFrontier Formation — 48.78°N, 111.16°W

Loading coastlines…

38 distinct localities, where the rock is now rather than where it was laid down. Tectonics draws the world it belonged to.

When

What has been found

The 40 most often recorded, of 89.

What else lived thenRank the rock of a period

Counts are of occurrence records, which measure the rock and the fieldwork together.