Monroe Creek Formation
69 distinct taxa, from 104 fossil occurrences the Paleobiology Database records under this name, spanning 30–19 Mya.
South Dakota, Nebraska, Wyoming · US
69 taxa · 104 fossils · 30–19 MyaFiled under the Arikaree Group.
Macrostrat places this rock in the Arikaree Group, and dates it 24–20 Ma. Macrostrat’s own record
Loading coastlines…
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
- Gregorymys formosus
- Palaeocastor fossor
- Alwoodia harkseni
- Amphechinus horncloudi
- Calamagras angulatus
- Castoridae
- Plesiosminthus grangeri
- Canidae
- Enhydrocyon pahinsintewakpa
- Florentiamys tiptoni
- Goinophis
- Gripholagomys
- Herpetotherium youngi
- Leidymys
- Mammacyon
- Paciculus montanus
- Parvericius
- Pleurolicus dakotensis
- Proscalops secundus
- Protospermophilus
- Trilaccogaulus ovatus
- Anilioides nebraskensis
- Archaeolagus ennisianus
- Arretotherium leptodus
- Calamagras platyspondyla
- Carnivora
- Centetodon magnus
- Cricetidae
- Delotrochanter petersoni
- Diceratherium
- Enhydrocyon crassidens
- Entelodontidae
- Euhapsis platyceps
- Eutypomys montanensis
- Fossorcastor brachyceps
- Geomyoidea
- Geringia gloveri
- Geringophis depressus
- Gregorymys
- Gregorymys curtus
The 40 most often recorded, of 69.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.