The species
Corriebaatar marywaltersae was discovered in 2009 based on the discovery of a well-preserved fourth
premolar found in
Victoria, Australia at the Flat Rocks fossil site. It was hypothesized to represent a
cimolodontan multituberculate mammal as opposed to a new, unrecognized lineage. The 2009 specimen was the
holotype and the only known remains of the species until a second specimen of
C. marywaltersae was discovered at the same site and described in 2022. The second specimen was two pieces of
the lower jawbone that preserved both the fourth premolar and the first and second molars. == Taxonomy ==