Genus: Stirtodon RICH, FLANNERY & VICKERS-RICH, 2020
Etymology: In honor of the late Prof. Ruben Arthur Stirton or 'Stirt" as he preferred to be known, noted pioneer of Australian paleomammology, who wrote his diary on hsi first day in Australia on 14 February 1953, "At last I had gotten to Australia in my quest for the ancestry of monotremes and the marsupials." He did much to advance knowledgei the area in the decade that followed (Rich et al., 2019), and Greek, odon, "tooth."

Species: elizabethae RICH, FLANNERY & VICKERS-RICH, 2020
Etymology: In recognition of the tireless effort by Dr. Elizabeth T. Smith of Lightning Ridge to bring to light the fossil history of that opal field.

Holotype: AMF 118621 (QM F33564 cast)

Locality: "...exposed in a mine at 'Vertical Bill's," near. "...the Three-Mile Field, Lightning Ridge, New South Wales...," (Clemens et al., 2003, 29°27’29"S, 147°58’02"E, Australia.

Horizon: Finch Clay facies, Griman Creek Formation.

Biostratigraphy:

Age: Albian Stage, Early Gallic Subepoch, Late Early Cretaceous Epoch, Early Cretaceous.

Material: A natural cast of a right upper premolar.