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. 2008 Sep 30;3(9):e3303. doi: 10.1371/journal.pone.0003303

Figure 4. Quadrate of the theropod Aerosteon riocoloradensis.

Figure 4

Left quadrate (MCNA-PV-3137; cast) in left lateral (A), medial (B), anterior (C), posterior (D), dorsal (E), and ventral (F) views. Scale bar equals 5 cm. Abbreviations: aqj, articular surface for the quadratojugal; asq, articular surface for the squamosal; co, condyle; he, head; pnec, pneumatocoel; qf, quadrate foramen.