![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/a/af/Rattus_macleari_skull_zygomatic_plate.png/640px-Rattus_macleari_skull_zygomatic_plate.png&w=640&q=50)
Zygomatic plate
Bony plate in rodent anatomy / From Wikipedia, the free encyclopedia
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In rodent anatomy, the zygomatic plate is a bony plate derived from the flattened front part of the zygomatic arch (cheekbone).[1] At the back, it connects to the front (maxillary) root of the zygomatic arch, and at the top it is connected to the rest of the skull via the antorbital bridge.[2] It is part of the maxillary bone, or upper jaw, which also contains the upper cheekteeth. Primitively, rodents have a nearly horizontal zygomatic plate.[3] In association with specializations in zygomasseteric system, several distinct morphologies have developed across the order.
![Skull, seen from the left, with a red circle around a bony plate before and above the upper first molar.](http://upload.wikimedia.org/wikipedia/commons/thumb/a/af/Rattus_macleari_skull_zygomatic_plate.png/640px-Rattus_macleari_skull_zygomatic_plate.png)
The term is also used for an analogous structure in some South American typotheres, including Pseudotypotherium[4] and Medistylus.[5]