Harrison Formation

146 distinct taxa, from 223 fossil occurrences the Paleobiology Database records under this name, spanning 30–5.3 Mya.

Nebraska, Wyoming, South Dakota · US

146 taxa · 223 fossils · 30–5.3 Mya

Filed under the Arikaree Group. Members recorded: Lower.

Macrostrat places this rock in the Arikaree Group, and dates it 24–17 Ma. Macrostrat’s own record

Harrison Formation — 43.30°N, 102.50°WHarrison Formation — 42.00°N, 104.20°WHarrison Formation — 42.40°N, 103.80°WHarrison Formation — 43.00°N, 104.50°WHarrison Formation — 42.80°N, 100.80°WHarrison Formation — 42.20°N, 103.10°WHarrison Formation — 42.42°N, 103.86°WHarrison Formation — 42.40°N, 103.60°WHarrison Formation — 42.53°N, 103.74°WHarrison Formation — 42.67°N, 104.07°W

Loading coastlines…

10 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 146.

What else lived thenRank the rock of a period

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