It was a member of the extinct order Multituberculata, and lies within the suborder Cimolodonta and the superfamily Taeniolabidoidea.

The genus was named by William Diller Matthew, W. Granger and George Gaylord Simpson in 1928.

For example, they all share a short wide snout and a blocky head[2] so it is probably instructive to look at a close and more commonly occurring relative, Lambdopsalis bulla, a likely burrower.

[3][4][5] This organism is found in the fossil record from 59-55 million years ago, during the Thanetian age.

For many years, this species was only known from a handful of fragmentary teeth and bones, but Mao et al discovered additional specimens in 2016 that allowed for more detailed analysis.