Genus: Lakotalestes CIFELLI, DAVIS & SAMES, 2014
Etymology: In reference to the Lakota Formation, from whence the holotype and only known specimen of the type species was collected; and Greek, lestes, "robber or plunderer," a commonly-used suffix for genera of small, presumably faunivorous mammals.

Species: luoi CIFELLI, DAVIS & SAMES, 2014
Etymology: In honor of Zhe-Xi Luo, for his contributions to the knowlege of Mesozoic mammals.

Holotype: OMNH 62673

Locality: OMNH V1243, near the mouth of Hell Canyon, Section 26, township 8S, Range 4E, N43°19', W103°37', about 17 ENE of Edgemont, Fall River County, South Dakota.

Horizon: Chilson Member, Lakota Formation.

Biostratigraphy:

Age: Berriasian-Valangian Stage, Lower Neocomian Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material: Right upper molar from the distal part of the series, perhaps M5.

Referred material:

= cf. Lakotalestes loui

ON 62854: A partial right lower molar.