Duo Lake Formation
18 distinct taxa, from 18 fossil occurrences the Paleobiology Database records under this name, spanning 487–453 Mya.
Northwest Terrorities · CA
18 taxa · 18 fossils · 487–453 MyaMacrostrat places this rock in the Road River Group, and dates it 484–426 Ma. Macrostrat’s own record
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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
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.