Figure 7. Probactrosaurus gobiensis Rozhdestvensky, 1966. PIN 2232 in On Asian ornithopods (Dinosauria: Ornithischia). 4. Probactrosaurus Rozhdestvensky, 1966

Figure 7. Probactrosaurus gobiensis Rozhdestvensky, 1966. PIN 2232/22-3. Quadrate (right) in lateral (A) and anterior (B) view. Abbreviations: cond = articular condyle for the lower jaw (surangular + articular); emb = embayment in the jugal wing of the quadrate (the facet on the upper edge of this recess may be for the attachment of the quadratojugal); h = dorsal 'head' of the quadrate articulates in a socket on the quadrate; pt.w = pterygoid wing of the quadrate.