Genera

Alxasaurus

7월 10, 2025 - By user

Alxasaurus

“Alxa Desert lizard”

[ Measurements | Time | Place | Remains | Essay | Images ]

CLASSIFICATION

Alxasaurus
D. A. Russell & Dong, 1995TYPE SPECIES:
A. elesitaiensis D. A. Russell & Dong, 1995

Animalia Vertebrata Tetrapoda Sauropsida Archosauromorpha Ornithodira Dinosauria Theropoda
Tetanurae Coelurosauria Therizinosauria

MEASUREMENTS

LENGTH: 3.5 m to 4 m

MASS: 350 kg to 400 kg

see also: World Records

TIME

see also: Ages of the Mesozoic

PLACE

see also: Paleo-Maps

REMAINS

IVPP 88402 [holotype]: right dentary, 5 crushed cervical vertebrae, 2 cervical ribs, 7 crushed ?posterior dorsal vertebrae, 6 dorsal ribs, rib fragments, sacrum with anterior sacral ribs, 20 caudal vertebrae
IVPP 88301: verebral & appendicular remains, ribs
IVPP 88510: appendicular remains
IVPP 88501: 5 crushed & disarticulated dorsal vertebrae, first & incomplete second sacral vertebrae, right metcarpal I, left metacarpal III, 4 manual phalanges, ungual phalanges, posterior tip of left ilium, both ends of right & proximal end of left femora, noth ends of left and proximal end of right tibiae, proximal ends of fibulae, pedal phalanges, 3 pedal unguals

see also: Anatomy

ESSAY

Alxasaurus was the most primitive therizinosauroid. Many claim that it is more similar to “normal” theropods than other therizinosauroids are.

IMAGES

Alxasaurus elesitaiensis

a profile of the primitive therizinosauroid Alxasaurus elesitaiensis

SHIRAISHI MINEO

bizarre Alxasaurus elesitaiensis

Nei Mongol theropods: An Alxasaurus elesitaiensis flees two Sinornithoides youngi.

T. MICHAEL KEESEY

Alxasaurus elesitaiensis in defensive posture

Field Guide to the TherizinosauriaI. Beipiaosaurus inexpectus II. Enigmosaurus mongoliensis III. “Chilantaisaurus” zheziangensis (based on other Therizinosauria) IV. Alxasaurus elesitaiensis V. Erlikosaurus andrewsi VI. Segnosaurus galbinensis VII. Nanshiungosaurus brevispinus (based on other Therizinosauria) VIII. “Nanshiungosaurus” bohlini (based on other Therizinosauria) IX. Therizinosaurus cheloniformis