Francis Formation
11 distinct taxa, from 11 fossil occurrences the Paleobiology Database records under this name, spanning 306–304 Mya.
Oklahoma · US
11 taxa · 11 fossils · 306–304 MyaMacrostrat dates this rock 306–305 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.