Species: olseni GILMORE, 1933
Etymology: In honor of Everett Olsen.
= Albertosaurus (Alectrosaurus) olseni (GILMORE, 1933) PAUL, 1988
= Albertosaurus olseni (GILMORE, 1933) PAUL, 1988

Lectotype: AMNH FARB 6554

Locality: Third Asiatic Expedition field site 136, approximately 1 km south of Erhlien, Iren Dabasu, near Erenhot, Inner Mongolia (Nei Mongolia), China.

Horizon: Iren Dabasu Formation.

Biostratigraphy:

Age: Cenomanian Stage, Upper Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material: Right femur, tibia, fibula, astragalus, calcaneum, and complete pes, but lacking the distal tarsal elements, left metatarsals II, III, and IV, and the fragmentary distal foot of a pubis. Two manual unguals are tentatively included in the lectotype.

A) Pes; B) Metatarsals in anterior view; C) Metatarsals Lateral view; D) Femur, E) Tibia. Scale 5 cm.

Composite skeleton.

Referred material:

 

CURRIE, & EBERTH, 1993

Locality: Erenhot, Inner Mongolia (Nei Mongolia), China.

Horizon: Iren Dabasu Formation.

Biostratigraphy:

Age: Cenomanian Stage, Upper Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

IVPP 180788-104: Teeth.

 

CURRIE pers comm.

Locality: Mongolia.

Horizon:

Biostratigraphy:

Age: Early Late Cretaceous.

Material:

Number: Not given: Fragmentary skeleton.