Genus: Alectrosaurus GILMORE, 1933
Etymology: Greek, Alektros “unbedded, unmarried” and Greek, sauros “lizard”, unmated lizard.

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 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:

CARR & WILLIAMS, 2005

AMNH 6556: Premaxillary and lateral teeth, an incomplete left lacrimal, the maxillary process of the left jugal, most of the right quadratojugal, the jugal process of the right ectopterygoid, and the quadrate ramus to the right pterygoid.

Note: Found near the type specimen.

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.

 

PERLE, 1977

Locality: Ömnögov (South Gobi), Mongolia.

Horizon: Baynshirenskaya Svita.

Biostratigraphy:

Age: Cenomianan-Turonian Stage, Upper Gallic Subepoch, Lower Gulf Epoch, Early Late Cretaceous.

Material:

IGM 100/50: Partial maxilla, nasal, scapulocoracoid, manual ungual.

GI No. SPS 100/51: Fragmentary skull, lower jaws, incomplete ilium, and metatarsals of the right foot?

Composite skull of 100/50 & 51.

Scapula (100/50); , metatarsals (100/51) and ungual (100/50).

Fragmentary ilium.