Species: osborni BROWN, 1912
Etymology: In honor of Henry Fairfield Osborn.

Holotype: AMNH 5220

Locality: Near the Tolman Ferry, Red Deer River, Wheatland County, Alberta Province, Canada.

Horizon: 500 feet below top of beds, Horseshoe Canyon Formation, Edmonton Group.

Biostratigraphy:

Age: Edmontonian age, lower Maastrichtian Stage, Upper Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Skull and a nearly complete skeleton.

Note: With skin impressions, along dentary, hip, feet, and caudal areas. (BELL, 2012, 2014)

New skeletal reconstruction (2023).

Paratype: AMNH 5221: Disarticulated skull and jaws and fragmentary skeleton with skin impressions.

Referred material:

BELL, 2012

Locality: Alberta Province, Canada.

Horizon: Horseshoe Canyon Formation, Edmonton Group.

Biostratigraphy:

Age: Edmontonian age, lower Maastrichtian Stage, Upper Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

AMNH 5271: Skeleton lacking skull and nearly complete tail.

Note: Skin impressions on its tail.

 

HEATON, 1972

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

NMC 8796: Nearly complete skull.

 

Modified from Bell, 2011.

_____________________________________________________________________________________

Species:? krischtofovici RIABININ, 1930 (nomen dubium)
Etymology:
= Saurolphus kryschtofovici STEEL, 1969 (sic)

Holotype:

Locality: Bielyie Kruchi, on the right (Chinese) side of the Amur River, China.

Horizon:

Biostratigraphy:

Age: Upper Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: Proximal end of left ischium.

_____________________________________________________________________________________

Species: angustirostris ROZHDESTVENSKY, 1952
Etymology: Latin, angustus, "narrow" and Latin, rostrum, "snout."

Holotype: PIN 551-356

Locality: 'Dragon's Tomb', Nemegt, Nemegt basin, Ömnögov (South Gobi), Mongolia.

Horizon: Nemegt Formation.

Biostratigraphy: Tarbosaurus bataar, Saurolophus angusitrostris and Dyplosaurus giganteus zone.

Age: Lower Maastrichtian Stage, Uppermost Senonian, Uppermost Gulf Epoch, Late Cretaceous.

Material: Skull and nearly complete skeleton.

New skeletal reconstruction (2023).

Referred specimens.

BELL, 2011

PIN 551/357: Adult skull.

PIN 551/359: Juvenile skull.

MPC 100/706: Adult skull.

PIN 551/358, 407, UALVP 49067, MPC 100/706, 764: Skulls

BELL, 2012

PIN 4216/49: Fragmentary caudal series with skin impressions.

UALVP 52748, 52824, 52781, 52786: Fragmentary skeletons with skin impressions.

 

KIELAN-JAWORWSKA & BARSBOLD, 1972.

Locality: Altan Ula IV, Nemegt Basin, Ömnögov (South Gobi), Mongolia.

Horizon: Upper Nemegt Formation.

Biostratigraphy:

Age: Lower Maastrichtian Stage, Uppermost Senonian, Uppermost Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: Incomplete skeleton, with a well preserved skull of a juvenile.

 

DEWAELE, TSOGTBAATAR, BARSBOLD, GARCIA, STEIN, ESCUILLIE, & GODEFROIT, 2015

Locality: Unknown, Nemegt Basin, Ömnögov (South Gobi), Mongolia.

Horizon: Upper Nemegt Formation.

Biostratigraphy:

Age: Lower Maastrichtian Stage, Uppermost Senonian, Uppermost Gulf Epoch, Late Cretaceous.

Material:

MPC-D100/764: Fragmentary skull and skeleton of a baby, found in a nest?, with eggshells.

 

KURZANOV, 1993

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

Number: Not given: Fragmentary tail? With skin impressions.

 

MARYANSKA & OSMOLSKA, 1984

Locality: N Nemegt Locality, Nemegt basin, Ömnögov (South Gobi), Mongolia.

Horizon: Nemegt Formation.

Biostratigraphy:

Age: Lower Maastrichtian Stage, Uppermost Senonian, Uppermost Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgD-I/12: Fragmentary right ramus of mandible.

ZPAL MgD-I/13: Proximal part of left fibula.

ZPAL MgD-I/157: Incomplete posterior part of skeleton of an adult individual including a series of 43 caudals, fragmentary ischium, left and right tibia, fibula and pes.

ZPAL MgD-I/160: Posterior portion of right tibia and astragalus.

ZPAL MgD-I/163: Left metatarsal IV.

ZPAL MgD-I/164: Pedal ungual.

ZPAL MgD-I/165: Fragmentary left metacarpal.

ZPAL MgD-I/169: Two caudals.

ZPAL MgD-I/170: Fragmentary skeleton of young individual including 24 caudals, fragments of fore limbs.

ZPAL MgD-I/171: Fragmentary skeleton of young individual including several damaged cervicals, dorsals and sacrals, proximal portion of right ulna.

 

Locality: Altan Ula II locality, Nemegt Basin, Ömnögov (South Gobi), Mongolia.

Horizon: Nemegt Formation.

Biostratigraphy:

Age: Lower Maastrichtian Stage, Uppermost Senonian, Uppermost Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgD-I/87: Skin impressions.

ZPAL MgD-I/158: Left scapula, coracoid, humerus, radius, ulna and incomplete manus.

ZPAL MgD-I/166: 5 dorsals of a young individual.

ZPAL MgD-I/168: Nearly complete pelvis lacking postacetabular processes to the ilia and shafts of ischia, sacrum, 8 or 9 posterior dorsals, with 4 fragmentary ribs.

 

Locality: Altan Ula III locality, Nemegt Basin, Ömnögov (South Gobi), Mongolia.

Horizon: Nemegt Formation.

Biostratigraphy:

Age: Lower Maastrichtian Stage, Uppermost Senonian, Uppermost Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgD-I./69: Fragment of right maxilla.

 

Locality: Altan Ula IV Locality, Nemegt Basin, Ömnögov (South Gobi), Mongolia.

Horizon: Nemegt Formation.

Biostratigraphy:

Age: Lower Maastrichtian Stage, Uppermost Senonian, Uppermost Gulf Epoch, Late Cretaceous.

Material:

ZPAL MgD-I/159: Almost complete skeleton of young individual including skull, first 8 cervicals, series of 18 dorsals, sacrum including 9 vertebrae, first 3 caudals, complete and right scapula, proximal portion of left one, right and left coracoid, 2 fragmentary sternal bones, fragmentary cervical and thoracic ribs, ilia (the left one incomplete), right and left prepubis, ischia lacking shafts, proximal portion of right femur, numerous skin imprints.

ZPAL MgD-I/162: Fragments of skull.

ZPAL MgD-I/167: Proximal portion of right tibia.

 

WATABE & SUZUKI, 2000b

Locality: Bügiin (Bugeen) Tsav, Nomingiin Gobi Desert, Bayankhongor Aimag, Ömnögov (South Gobi), Mongolia.

Horizon: Nemegt Formation.

Biostratigraphy:

Age: Lower Maastrichtian Stage, Uppermost Senonian, Uppermost Gulf Epoch, Late Cretaceous.

Material:

Field number 940822 BgT BO: Skull.

SUZUKI & WATABE, 2000a

Field number 950619 BgT Saurol. A: Lower jaw.

Field number 950619 BgT Saurol. B (HMNS 06-12-62): Right tibia.

Field number 950620 BgT Saurol. C (HMNS 96-12-60): Caudal vertebrae.

Field number 950620-25 BgT Saurol (HMNS 96-12-65): Right pubis.

Field number 950621 BgT Saurol. D (HMNS 96-12-61): Caudal vertebrae.

Field number 950622 BgT Saurol. E: Skull.

Field number 950622 BgT Saurol. F (HMNS 9601101): Cervical-dorsal vertebrae and ribs.

Field number 950623 BgT Saurol. G (HMNS 95-12-59): Dorsal vertebrae.

Field number 950625 BgT Saurol. H: Right femur.

Field number 950625 BgT Saurol. I (HMNS 96-12-58): Pelvis and caudal part..

HONE & WATABE, 2010

MPC-D100/764: A near complete specimen. Note: Has 3 different tooth marks on its left humerus.

 

WATABE, SUZUKI, TSOGTBAATAR, TSUBAMOTO & SANEYOSHI, 2010

Locality: Gurilin Tsav, Nemegt Basin, Ömnögov (South Gobi), Mongolia.

Horizon: Nemegt Formation.

Biostratigraphy:

Age: Late Campanian or Early Maastrichtian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

Jacket no M20-23: Skull, teeth, mandible and fragmentary skeleton.

TSOGTBAATAR & CHINZORIG, 2010

Field number: 940829 GT TSOGT: Tibia & fibula wiht astragalus.

Locality: Tsagaan Khushuu, Nemegt Basin, Ömnögov (South Gobi), Mongolia.

Horizon: Nemegt Formation.

Biostratigraphy:

Age: Late Campanian or Early Maastrichtian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

Jacket no M-27: Cervical vertebrae.

_____________________________________________________________________________________