Lower Shale-Siltstone Formation
17 distinct taxa, from 48 fossil occurrences the Paleobiology Database records under this name, spanning 149–137 Mya.
Northwest Territories · CA
17 taxa · 48 fossils · 149–137 MyaMembers recorded: Lower, Upper.
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3 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.