Scales Formation

66 distinct taxa, from 79 fossil occurrences the Paleobiology Database records under this name, spanning 458–443 Mya.

Iowa, Minnesota, Illinois, Iowa, Illinois · US

66 taxa · 79 fossils · 458–443 Mya

Filed under the Maquoketa Group. Members recorded: Elgin, Orchard Creek Shale, Clermont, Orchard Creek.

Macrostrat places this rock in the Maquoketa Group, and dates it 450–448 Ma. Macrostrat’s own record

Scales Formation — 43.52°N, 91.77°WScales Formation — 42.48°N, 90.87°WScales Formation — 37.23°N, 89.47°WScales Formation — 40.00°N, 90.00°WScales Formation — 43.00°N, 91.65°WScales Formation — 43.80°N, 92.00°W

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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 66.

What else lived thenRank the rock of a period

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