Hulsanpes

Osmólska, 1982 HOOL-sahn-pees

Named for the type locality Khulsan (Mongolia) combined with Latin 'pes' meaning 'foot', hence 'Khulsan foot'. The species name honors Mongolian paleontologist Altangerel Perle.

83.6–72.2 million years ago Campanian, Late Cretaceous

Late Cretaceous stages

Hulsanpes is a genus of halszkaraptorine theropod dinosaurs that lived during the Late Cretaceous in what is now the Baruungoyot Formation of Mongolia, about 75-72 million years ago. The remains were found in 1970 and formally described in 1982 by Halszka Osmólska, who noted that the genus is represented by an immature individual. Hulsanpes represents the first record of the basal dromaeosaurid subfamily Halszkaraptorinae.

Diagnosis

Functionally tridactyl pes
Metatarsus slender (width:length ratio 0.16)
Metatarsal III not wedged, in anterior view
Metatarsals II-IV subequally thick
Second pedal digit specialized

Species

Hulsanpes perlei Osmólska, 1982

Type species

Named for Altangerel Perle, the veteran Mongolian paleontologist.

Holotype: ZPAL MgD-I/173 , Institute of Paleobiology, Polish Academy of Sciences
Material: Partial foot
Horizon: Baruungoyot Formation, Campanian, Late Cretaceous , 83.6–72.2 million years ago
Locality: Khulsan, Ömnögovi, Mongolia

References

Osmólska, H. (1982). Hulsanpes perlei n.g. n.sp. (Deinonychosauria, Saurischia, Dinosauria) from the Upper Cretaceous Barun Goyot Formation of Mongolia. Neues Jahrbuch für Geologie und Paläontologie - Monatshefte 1982(7): 440-448. Schweizerbart. doi:10.1127/njgpm/1982/1982/440 osmólska1982a
Jones, B. (2026). The Princeton Encyclopedia of Dinosaurs: Theropods. Princeton University Press.
Source of the body length, mass, and hip height estimates.
jones2026c