Batyrosaurus is an extinct genus of herbivorous basal hadrosauroid dinosaur known from the Late Cretaceous Bostobe Formation (Santonian to Campanian stage) of central Kazakhstan. It contains a single species, Batyrosaurus rozhdestvenskyi. It is possible that Batyrosaurus represents the same taxon as the doubtful Arstanosaurus as both were found from the same formation.
Description[]
Batyrosaurus is an early Hadrosauroid known from the Bostobinskaya Formation in Kazakhstan, a country rarely known for its dinosaur fossils. It lived from the Santonian to Campanian ages of the late Cretaceous, about 83 million years ago. It was found near Akkurgan, and is known from a partial skeleton. It was about 5 to 6 meters long, and it had a somewhat elongated skull, and it had a thumb claw like other iguanodonts.
The palaeoneurology of Batyrosaurus rozhdestvenskyi has been briefly described on the basis of a physical endocast of the holotypic specimen (AEHM 4/1; Godefroit et al. 2012) from the Bostobe Formation (Santonian; Averianov et al. 2016) at Akkurgan (Kazakhstan). The endocast reconstruction of Lurdusaurus arenatus, which is a species from the Elrhaz Formation (Aptian; Taquet 1976) of Niger, has only been touched upon in an abstract (Lauters et al. 2012b). Except for the cerebral inflation, the outline draws a fairly isosceles triangle in which the vertex is the dural peak. Although,Godefroit et al. 2012) did not provide a graphic illustration of the aspect of the whole endocast of Batyrosaurus rozhdestvenskyi in dorsal view, their description (Godefroit et al. 2012, p 350) matches that in Proa. The cerebral portion is pyriform in dorsal view.