Marias River Shale
34 distinct taxa, from 53 fossil occurrences the Paleobiology Database records under this name, spanning 101–84 Mya.
Montana · US
34 taxa · 53 fossils · 101–84 MyaMembers recorded: Kevin, Cone.
Macrostrat places this rock in the Colorado Group, and dates it 101–84 Ma. Macrostrat’s own record
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9 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
- Sphenoceramus
- Volviceramus involutus
- Inoceramus undabundus
- Volviceramus exogyroides
- Cordiceramus cordiformis
- Inoceramus
- Inoceramus (Volviceramus) koeneni
- Magadiceramus soukupi
- Neocardioceras juddii
- Scaphites
- Baculites asper
- Baculites codyensis
- Baculites mariasensis
- Clioscaphites
- Clioscaphites vermiformis
- Cordiceramus lesginensis
- Cremnoceramus deformis
- Cremnoceramus deformis erectus
- Inoceramus frechi
- Inoceramus gibbosus
- Inoceramus glacierensis
- Inoceramus sokolovi
- Necrocarcinus
- Phelopteria
- Pholadomya
- Protexanites
- Pycnodonte
- Rostellites
- Scaphites (Scaphites) preventricosus
- Scaphites mariasensis
- Scaphites ventricosus
- Turritella
- Veniella
- Xenophora
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.