Sagittal crest

Definition and stakes

Gerrit S. Miller,  Mammals Collected by Dr. W. L. Abbott on the Natuna Islands

“ Audital bullæ less raised above level of basi-occipital when skull is held upside down and viewed from behind. The sagittal crest, though of normal development in very old individuals, is absent at an age when it is well grown in the larger species. In Arctogalidia leucotis and A. stigmatica, even in animals so young that the teeth are unworn and all the sutures of the rostrum plainly visible, the sagittal crest is a knife-like ridge extending from proencephalon to lambdoid suture, and rising to a height of about 4 mm. over middle of braincase. ”
Source: Gutenberg

Portrait of William Berryman Scott William Berryman Scott,  A history of land mammals in the Western Hemisphere (1913)

“ The roof and much of the sides of the cranium are formed by two pairs of large bones, the parietals behind and the frontals in advance; along the median line of the cranial roof, where the two parietals meet, is usually another ridge, the sagittal crest, which joins the occipital crest behind. The sagittal crest also varies greatly in prominence, being in some mammals very high and in others entirely absent, and, like the occipital crest, is a primitive character; as a rule, it is longest and highest in those mammals which have the smallest brain-capacity. ”
Source: Gutenberg

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