Groos Quarry Formation

13 distinct taxa, from 15 fossil occurrences the Paleobiology Database records under this name, spanning 451–450 Mya.

Michigan · US

13 taxa · 15 fossils · 451–450 Mya

Macrostrat places this rock in the Trenton Group, and dates it 455–450 Ma. Macrostrat’s own record

Groos Quarry Formation — 46.35°N, 85.52°WGroos Quarry Formation — 45.92°N, 86.97°WGroos Quarry Formation — 45.81°N, 87.10°W

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3 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

What else lived thenRank the rock of a period

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