The species was described by
Mike Archer in 1975, distinguishing the new taxon from other dasyurids by nominating it as the
type species of a new genus. Archer provided a description for a second species of
Ningaui, the more widely distributed
Ningaui ridei. The
holotype is a specimen obtained escaping a fire in spinifex country, a collection made by A. Snell in 1963 at Mount Robinson in the northwest of Australia. Other material examined included a specimen collected in 1957 by
E. H. M. Ealey of
Monash University, then working as a field officer for the
CSIRO, his informal name, 'Tim' Ealey. is the eponym of the specific epithet. == Description ==