LUCAS, ESTEP & HECKERT, 1999
Locality: Apache Canyon, Quay County, New Mexico.
Horizon: Redonda Formation.
Biostratigraphy:
Age: Apachean, Latest Norian Stage-Rhaetian Stage, Late Triassic Epoch, Late Late Triassic.
Material:
YPM 4230: Unworn pristine postcanine tooth.
YPM 4228: Worn postcanine tooth.
YPM 4227: Postcanine tooth.