Holotype: 2584-4

Locality: Site 14, Dzhailyau-Cho, Madygen area, Lyailyakskii District, Osh Province, Turkestan Range, Southern Fergana, South Kirgistan.

Horizon: Madygen Svita.

Biostratigraphy:

Age: Ladinian Stage, Mid Triassic Epoch-Carnian Stage, Lower Late Triassic Epoch, Middle to Late Triassic.

Material: Skull, skeleton and dorsal appendages.

Referred material:

2584-5: Isolated distal end of a dorsal appendage.

2584-9: Close-set of dorsal appendages.

Note: Dr. Larry Martin believes these to be true feathers.