Runningwater Formation

The Runningwater Formation is a geologic formation in Nebraska. It preserves fossils dating back to the Hemingfordian of the Early Miocene of the Neogene period. The sandstones and conglomerates of the formation were deposited in a fluvial environment. The formation has provided many fossil mammals.

Fossil content

Among the following fossils have been found in the formation:

• Aletomeryx gracilis
• Arretotherium fricki
• Barbouromeryx trigonocorneus
• Cynarctoides acridens
• Cynelos stenos
• Diceratherium niobrarense
• Daphoenodon (Borocyon) robustum
• Desmocyon thomsoni
• Hypertragulus minor
• Menoceras barbouri
• Merychyus arenarum, M. elegans
• Metatomarctus canavus
• Osbornodon iamonensis
• Pseudoblastomeryx advena
• Anchitheriomys stouti
• Desmatippus tyleri
• Edaphocyon lautus
• Amphicyon galushai
• Craterogale cf. simus
• Leptarctus cf. ancipidens
• Leptocyon vulpinus
• Tephrocyon scitulus
• Merycochoerus proprius

• Macrochelys schmidti
• Rhineura marslandensis
• Sceloporus sp.

See also

• List of fossiliferous stratigraphic units in Nebraska
• Paleontology in Nebraska

References

Bibliography