McGregor Formation

70 distinct taxa, from 113 fossil occurrences the Paleobiology Database records under this name, spanning 458–450 Mya.

Wisconsin, Indiana, Illinois · US

70 taxa · 113 fossils · 458–450 Mya

Filed under the Platteville Group. Members recorded: Mifflin.

McGregor Formation — 42.73°N, 90.48°WMcGregor Formation — 40.78°N, 87.39°WMcGregor Formation — 42.51°N, 89.03°WMcGregor Formation — 42.00°N, 89.39°WMcGregor Formation — 42.81°N, 89.64°WMcGregor Formation — 43.03°N, 90.70°W

Loading coastlines…

6 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 70.

What else lived thenRank the rock of a period

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