Looking for second opinions, confirmation, or correction on this jaw from the White River Group, Oligocene, Nebraska. These last few posts represent my first "go around" with rodent teeth. I have this one as Myomorpha cf. Eumys elegans. Of the teeth listed in "The Mammalian Fauna of the White River Oligocene: Part II. Rodentia" by Scott et al. 1937, this seemed like the best match. An old publication, but I see that this taxon is still valid. I'm sure new species have been discovered.
Here is the jaw. Scale in mm. Close up of occlusal surface not to scale.