1. Zygomaticotemporal (ZT) suture - The temporal process of the zygoma articulates with the zygomatic process of the temporal bone to form the anterolaterally projected zygomatic arch (ZA) 2. Zygomaticomaxillary (ZM) suture and the infraorbital rim (IOR) 3. Zygomaticofrontal (ZF) suture 4. Zygomaticosphenoidal (ZS) suture