Fig. 2.

(A) Lateral view of a pig skull showing the locations of sections through circumzygomatic sutures (bars). F-LAC, fronto-lacrimal; L-ZY, lacrimo-zygomatic; Z-MAX, zygomatico-maxillary. Sections were taken from a portion of the Z-MAX suture that is not visible in this view. (B) Close-up of the zygomatic arch in frontal section showing the squamosal bone (sq), the zygomatic bone (zy) and the six locations (given as a proportion of bone height) on the lateral surfaces of these bones where growth was assessed. Angle β is the orientation of the trabecular laminae in the squamosal bone. L, lateral; M, medial.