Phi Kappa Formation

74 distinct taxa, from 363 fossil occurrences the Paleobiology Database records under this name, spanning 477–427 Mya.

Idaho · US

74 taxa · 363 fossils · 477–427 Mya

Filed under the Valmy Group.

Macrostrat dates this rock 475–431 Ma. Macrostrat’s own record

Phi Kappa Formation — 43.84°N, 114.27°WPhi Kappa Formation — 43.85°N, 114.18°W

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2 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 74.

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