Species: olseni HUNT & LUCAS, 1994
Etymology: For P. E. Olsen, who found the holotype, and for his diverse contributions
to the study of Newark Supergroup.
= Lethosauridae incertae sedis GALTON, 1983
Holotype: YPM 7666
Locality: East of Pekin, Wadesboro Basin, North Carolina.
Horizon: Pekin Formation.
Biostratigraphy:
Age: Upper Carnian Stage, Lower Early Cretaceous Epoch, Late Triassic.
Material: Dentary/maxillary tooth.
Referred material:
YPM 7667-7669: 1 dentary/maxillary tooth and 2 premaxillary teeth.
= aff. Pekinosaurus olsoni HECKERT, 2001, 2004Locality: NMMNH Locality 1312, Crosby County, Texas.
Horizon: Colorado City Member, Dockum Formation, Chinle Group (Lower Kalgary).
Biostratigraphy:
Age: Upper Otischalkian, Late Carnian Stage, Lower Late Triassic Epoch, Late Triassic.
Material:
NMMNH P-34257: Tooth.
Locality: NMMNH 1430, at the head of the south fork of Home Creek north of Kalgary Locality, UTM 3701500N, 398850E, zone 14, NAD 27, Crosby County, Texas.
Horizon: Colorado City Member, Tecovas Formation, Chinle Group.
Biostratigraphy:Age: Adamanian, Latest Carnian Stage, Late Triassic Epoch, Late Triassic.
Material:
NMMNH P-34406: Tooth.
HECKERT, LUCAS & SULLIVAN, 2000, HECKERT & LUCAS, 2001
Locality: NMNH locality 1171, Los Esteros microsite, Santa Fe County, New Mexico.
Horizon: Los Esteros Member, Santa Rosa Formation.
Biostratigraphy:
Age: Adamanian, Latest Carnian Stage, Late Triassic Epoch, Late Triassic.
Material:
NMNH P-32626: Tooth.