Oogenus: Trachoolithus MIKHAILOV, 1994
Etymology: Latin tracho (pull) and oolithus, main root of generic names for fossil eggs, Greek, Oo, 'egg', and Greek, lithus, 'rock or stone'.

Oospecies: faticanus MIKHAILOV, 1994
Etymology: Latin faticanus (Prophetic)

Holotype: PIN 4227-3

Locality: Buylyasutuin-Khuduk Locality, Ubur-Khangay region, Mongolia.

Horizon: Dushi Ula Formation.


Age: Uppermost Neocomian Subepoch to Aptian Stage, Middle Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material: 1 small fragment of eggshell.

Referred material:

Number: Not given: Several hundred shell fragments from two points in same locality.