Are the holotype of Harpymimus okladnikovi and the unnamed "Hüren Dukh ornithocheiroid" also from the Lower Hüren Dukh Formation? I can't get any geological context for the former, but for the latter, Bakhurina and Unwin (1995) state it was found in "dark grey clayey silt, which also contained numerous remains of wood and fragments of fish and turtles."

Judging from the description of the siltsone, I'm curious if this could correlate to the Middle Member, which in Ito et al. (2006) is stated to have "gray-colored siltstone and mudstone with plant fragments and rootlets."

Any information would be greatly appreciated!

--- Lori C.