Khurendukhosaurus

[1] These bones were found in the Lower Cretaceous Murtoi Formation at Lake Gusinoye, Buryatia, Russia.

[3] The first Russian choristodere, Efimov and Storrs (2000) found it difficult to distinguish from K. orlovi based on the small amount of material.

[1] Skutschas (2008) reported on additional material which supported the placement of the Russian taxon within Khurendukhosaurus, but found the species K. bajkalensis to be dubious within the genus.

Efimov and Storrs regarded it as a basal member of Choristodera,[1] but Skutschas was unable to confirm this in a phylogenetic analysis.

[2] In 2019, another partial skeleton (MPC-MX 1/107) of the taxon was described from the Khuren Dukh Formation, confirming the presence of a long neck with at least 13 cervical vertebrae.