Genus: Acuodulodon HU, MENG & CLARK, 2007
Etymology: Latin, acuere, "to sharpen," Middle English, dul, "dull" and Greek, odon, "tooth"; the genus name indicates cusps a and c on lower molariform of the new taxon maintainig sharpness despite considerable wear while cusp g and crest b-g are deeply worn.

Species: sunae HU, MENG, & CLARK, 2007
Etymology: In honor of Professor Ailin Sun from the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Science, Beijing, Cina, to recognize her contribution to the study on Chinese Mesozoic mammals.

Holotype: IVPP V 15332

Locality: Wuciwan area of Junggar Basin, northwestern Xinjiang Province, China.

Horizon: Upper part of the Shishugou Formation.


Age: Oxfordian Stage, Lower Malm Epoch, Early Late Jurassic.

Material: A fragmentary left dentary with 3 premolariformes, roots of the canine, 2 posterior molariforms, and fragments of 2 anterior molariforms preserved in situ.