BAYANKHONGOR AIMAG
NORTH OF TSETSEN UUL MOUNTAIN
HOLBOTU-GOL SOUTH OF BOON TSAGA NUUR
KHOLBOOT (HOLBOTU)
KHOORILT LAYERS
ANDAIKHUDAG FORMATION
UPPER HAUTERIVIAN STAGE
UPPER NEOCOMIAN SUBEPOCH-LOWER BARREMAIN STAG
LOWER GALLIC SUBEPOCH
LOWER EARLY CRETACEOUS EPOCH
EARLY CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AVES LINNAEUS, 1758
SUBCLASS: SAURORNITHES NICHOLSON, 1879
AVEBREVICAUDA PAUL, 2001
INFRACLASS: ORNITHOTHORACES NOVA
LEGION: ORNITHURAE NOVA
COHORT: ENANTIORNITHES NOVA
Incertae sedis
*Holbotia ponomarenkoi
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