Wilhelmi Formation
19 distinct taxa, from 20 fossil occurrences the Paleobiology Database records under this name, spanning 443–433 Mya.
Illinois · US
19 taxa · 20 fossils · 443–433 MyaMacrostrat dates this rock 446–441 Ma. Macrostrat’s own record
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1 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.