Sentinel Butte Formation
20 distinct taxa, from 25 fossil occurrences the Paleobiology Database records under this name, spanning 61–56 Mya.
North Dakota · US
20 taxa · 25 fossils · 61–56 MyaMacrostrat places this rock in the Fort Union Group, and dates it 57–56 Ma. Macrostrat’s own record
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6 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
- Titanoides primaevus
- Plesiadapis
- Ptilodus kummae
- Adunator minutus
- Arctocyonidae
- Azolla stanleyi
- Bisonalveus
- Ectocion
- Ectocion collinus
- Metatheria
- Mimetodon silberlingi
- Multituberculata
- Neoplagiaulax hazeni
- Phenacodus magnus
- Prochetodon
- Prodiacodon
- Propalaeosinopa
- Protelliptio (Plesielliptio) priscus
- Titanoides
- Trichopterodomus leonardi
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.