(In many mammals) a bony ridge on the top of the skull to which the jaw muscles are attached.
- The pronounced ridge, called a sagittal crest, on the skull that Ammann found in 1996 is thought to be formed to support large jaw muscles, an indication of large body size.
- They lack a sagittal crest, but prominent ridges often run along the parietals.
- A low sagittal crest extends from the supraorbital ridges to the parietal region.
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