Species: disparoserratus (MALEEV, 1952) TUMANOVA, 1987
Etymology: Laitn, dispar, "unlike" and Latin, serratus, "serrated."
= Syrmosaurus disparoserratus MALEEV, 1952
= Pinacosaurus disparoserratus (MALEEV, 1952) OLSHEVSKY, 1991
= Talarurus disparoserratus (MALEEV, 1952) MARYANASKA, 1977
= Symrosaurus disparoserrata KUHN, 1964 (sic)
= Talarurus disparsoserratus MARYANASKA, 1977 (sic)

Holotype: PIN 554/2-1

Locality: Shiregin Gashun (Sheergeen Gashoon), Bayanhongor Aimag, Mongolia.

Horizon: Sheergeen Gashoon Formation (= Bayn Shireh Svita).

Biostratigraphy:

Age: Cenomanian-Turonian Stage, Uppermidde-Upper Gallic Subepoch, Lower Gulf Epoch, Middle-Late Cretaceous.

Material: Fragments of right maxilla, basicrania fragment with occipital condyle, basioccipital and bassiphenoid.

Breakdown as follows.

PIN 554/I-1: Left maxilla of same specimen.

PIN 554/2-1: Endocranial fragment with occipital condyle.

Referred material:

ZPAL MgDI/115: Right ilium.