Seven Rivers Formation
3 distinct taxa, from 3 fossil occurrences the Paleobiology Database records under this name, spanning 264–260 Mya.
New Mexico · US
3 taxa · 3 fossils · 264–260 MyaMacrostrat places this rock in the Artesia Group, and dates it 265–262 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.