Madison Valley Formation
44 distinct taxa, from 45 fossil occurrences the Paleobiology Database records under this name, spanning 16–13 Mya.
Montana · US
44 taxa · 45 fossils · 16–13 MyaMembers recorded: Lower Clay.
Macrostrat dates this rock 23–2.6 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
- Cupidinimus madisonensis
- Aelurodon ferox
- Alphagaulus pristinus
- Ancenycteris
- Angustidens vireti
- Archaeolaginae
- Blastomeryx gemmifer
- Camelidae
- Copemys lindsayi
- Cynomys
- Domninoides
- Dryinoides oxyrhachis
- Euroxenomys inconnexus
- Hypohippus osborni
- Leporidae
- Leptarctus primus
- Limnoecus
- Marmotini
- Martes
- Merycodus necatus
- Mesogaulus ballensis
- Metechinus fergusoni
- Mioheteromyinae
- Mionictis
- Monosaulax pansus
- Mookomys formicarum
- Mookomys thrinax
- Oreolagus nevadensis
- Paratomarctus temerarius
- Peraceras profectum
- Peridiomys halis
- Perognathoides eurekensis
- Perognathus
- Perognathus ancenensis
- Phelosaccomys annae
- Plionictis kinseyi
- Plionictis ogygia
- Scaphohippus
- Spea neuter
- Spermophilus (Otospermophilus) jerae
The 40 most often recorded, of 44.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.