Fig. 3 in New data on cranial anatomy of the ceratopsian dinosaur Psittacosaurus major

Fig. 3. Ceratopsian dinosaur Psittacosaurus major Sereno, Zhao, Brown, and Tan, 2007, new cranial specimen CAGS−IG−VD−004 from the Early Cretaceous Lujiatun Bed of Yixian Formation near Beipiao City, Liaoning Province, China, in palatal view (A) (with arrows indicating the neurovascular openings in the secondary palate formed by the rostral−premaxilla−maxilla complex), and right lateral and ventral view (B) of the caudodorsal portion of the skull, showing the internal (ventral) surface of the frontal and the quadrate cotyla of the squamosal. Photographs (A1, B1) and interpretive outlines (A2, B2).