Dwyfach Formation
18 distinct taxa, from 19 fossil occurrences the Paleobiology Database records under this name, spanning 457–454 Mya.
Wales · UK
18 taxa · 19 fossils · 457–454 MyaMacrostrat places this rock in the Ogwen Group, and dates it 458–445 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.