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The occipital bun pointed out on a Neanderthal skull. The occipital bun is a protuberance of the occipital bone. Its size and shape has been compared to that of a dinner roll. It is a quintessential trait of Neanderthals, though it is a trend in archaic Homo species. The true purpose of the occipital bun has not yet been defined. [3]
Occipital bun, a protuberance of the occipital bone, which looks like a hair knot [14] Projecting mid-face (midsagittal prognathism) Projecting jaws (maxillary and mandibular prognathism) Less neotenized skull than of a majority of modern humans [7] Low, elongated skull with flat lambdoid region; Broad cranial vault with "en bombe" parietal ...
The occipital torus thickness also known as the occipital bun which is the back of the head was also fairly thick compared to most H. erectus with a thickness of 18.5 mm. [11] OH 9 being the largest cranium capacity, helped us learn the increase of brain growth in H. erectus.
The occipital torus can be bordered by furrows on the top and bottom margins (for muscle attachment), and the bottom margin of the torus gradually fades. The midpoint of the torus features an additional prominence, the occipital bun .
Near the middle of the squamous part of occipital bone is the external occipital protuberance, the highest point of which is referred to as the inion. The inion is the most prominent projection of the protuberance which is located at the posterioinferior (rear lower) part of the human skull. The nuchal ligament and trapezius muscle attach to it.
The occipital bone overlies the occipital lobes of the cerebrum. At the base of the skull in the occipital bone, there is a large oval opening called the foramen magnum, which allows the passage of the spinal cord. Like the other cranial bones, it is classed as a flat bone. Due to its many attachments and features, the occipital bone is ...
The occipital torus is moderately wide, and a deep sulcus that is somewhat continuous along the superior nuchal line makes this formation pronounced. A suprainiac depression is either not found above it, or, like Bilzingsleben , it is not preserved in the fossil as it sits high and starts with the opisthocranion .
At the back of the skull, there is a sharp, thick occipital torus (a projecting bar of bone) which marks a clear separation between the occipital and nuchal planes. The occipital torus projects the most at the part corresponding to the external occipital protuberance in modern humans. The base of the temporal bone is consistent with Java Man ...