Amsden Formation

184 distinct taxa, from 757 fossil occurrences the Paleobiology Database records under this name, spanning 335–299 Mya.

Wyoming, Montana · US

184 taxa · 757 fossils · 335–299 Mya

Members recorded: Horseshoe, Ranchester, Moffat Trail, Ranchester Limestone.

Macrostrat dates this rock 332–299 Ma. Macrostrat’s own record

Amsden Formation — 43.00°N, 107.00°WAmsden Formation — 43.77°N, 110.88°WAmsden Formation — 41.81°N, 107.30°WAmsden Formation — 41.83°N, 107.24°WAmsden Formation — 41.92°N, 107.34°WAmsden Formation — 41.94°N, 107.36°WAmsden Formation — 42.73°N, 108.04°WAmsden Formation — 42.51°N, 108.47°WAmsden Formation — 42.56°N, 108.65°WAmsden Formation — 42.59°N, 108.67°WAmsden Formation — 42.66°N, 108.73°WAmsden Formation — 43.18°N, 109.20°WAmsden Formation — 43.89°N, 110.09°WAmsden Formation — 43.68°N, 109.62°WAmsden Formation — 43.62°N, 109.50°WAmsden Formation — 43.51°N, 107.46°WAmsden Formation — 44.17°N, 106.85°WAmsden Formation — 44.45°N, 106.91°WAmsden Formation — 44.88°N, 107.35°WAmsden Formation — 44.88°N, 107.39°WAmsden Formation — 41.46°N, 106.81°WAmsden Formation — 42.40°N, 110.32°WAmsden Formation — 42.81°N, 110.79°WAmsden Formation — 42.87°N, 110.79°WAmsden Formation — 45.75°N, 112.00°WAmsden Formation — 43.58°N, 106.82°WAmsden Formation — 45.99°N, 111.77°W

Loading coastlines…

27 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 184.

What else lived thenRank the rock of a period

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