Nidimys

{{Short description|Extinct species of mammal}}

{{Italic title}}

{{speciesbox

| name = Nidimys occultus

| fossil_range = {{fossil range|Late Cretaceous}}

| genus = Nidimys

| parent_authority = Hunter et al., 2010

| species = occultus

| authority = Hunter et al., 2010

}}

Nidimys occultus is a multituberculate which existed in the United States during the Edmontonian faunal stage of the upper Cretaceous period, and the only species in the genus Nidimys.{{cite journal |author=John P. Hunter, Ronald E. Heinrich & David B. Weishampel |year=2010 |title=Mammals from the St. Mary River Formation (Upper Cretaceous), Montana |journal=Journal of Vertebrate Paleontology |volume=30 |issue=3 |pages=885–898 |doi=10.1080/02724631003763490|bibcode=2010JVPal..30..885H |s2cid=128823128 }}