Species: tardabilis NESOV & KAZHNSHKINA, 1989
Etymology: Latin, tardabilis, "that renders slow."

Holotype: CCMGE (TsNIGR number #) 251/12457

Locality: CBI-27, Navoi Viloyat (district), central Kyzylkum Desert, Dzharakuduk, Uzebekistan.

Horizon: Lower section of the Bissekt Formation, (Bissektiyskaya Svita).

Biostratigraphy:

Age: Upper Turonian Stage, Uppermost Gallic Subepoch, or Coniacian Stage, Lowermost Senonian Subepoch, Lower Gulf Epoch, Early Late Cretaceous.

Material:

Material: Left maxilla with teeth, and anterior, dorsal and posterior portions broken away.

Skull after Nesov, 1995.

Referred material:

628: Braincase.

717-718: Squamosal.

723: Medial bridge of the frill.

CCMGE 252/12457:

CCMGE 253/12457:

CCMGE 254/12457: Horn core.

CCMGE 255/12457: Predentary.

CCMGE 256/12457:

CCMGE 310/351: Teeth, the medial portion of the parietal, squamosals, nasal and supraorbital horn cores, braincase, vertebrae and probable distal portion of a scapula.

SUES & AVERIANOV, 2009

CCMGE 9/3760: Distal end of left humerus.

USNM 538130: Distal end of right tibia with fused astragalus.

ZIN PH 303/16: Maxillary fragment.

ZIN PH 342/16: Left metatarsal IV.

ZIN PH 1868/16: Right postorbital.

ZIN PH 1882/16, 2322/16, 2319/16, 2321/16: Teeth.

 

Locality: Dzhyrakuduk locality, site CBI-4, north of Bukhara in central Kyzylkum Desert, Uzbekistan.

Horizon: Lower part of Bissekty Formation.

Biostratigraphy:

Age: Coniacian Stage, Lower Senonian Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material:

No. 727: Predentary.

 

Locality: Dzhyrakuduk locality, site CBI-27, north of Bukhara in central Kyzylkum Desert, Uzbekistan.

Horizon: Lower part of Bissekty Formation.

Biostratigraphy:

Age: Upper Turonian Stage, Uppermost Gallic Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material:

No. 562: Supraorbital horn.

 

Locality: Dzhyrakuduk locality, site CBI-28, north of Bukhara in central Kyzylkum Desert, Uzbekistan.

Horizon: Lower part of Bissekty Formation.

Biostratigraphy:

Age: Upper Turonian Stage, Uppermost Gallic Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material:

No. 561: Superaorbital horn.

 

Locality: Dzhyrakuduk locality, site CDZH-16, north of Bukhara in central Kyzylkum Desert, Uzbekistan.

Horizon: Lower part of Bissekty Formation.

Biostratigraphy:

Age: Upper Turonian Stage, Uppermost Gallic Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material:

No. 254: Nasal horn.

 

Locality: Dzhyrakuduk locality, site CDZH-17, north of Bukhara in central Kyzylkum Desert, Uzbekistan.

Horizon: Lower part of Bissekty Formation.

Biostratigraphy:

Age: Upper Turonian Stage, Uppermost Gallic Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material:

No. 549-551: Teeth.