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Cranial suture closure and its implications for age estimation.
Timing of cranial suture closure in placental mammals: Phylogenetic patterns, intraspecific variation, and comparison with marsupials.
The degree of closure of the cranial sutures indicates a mean age of 40 (interdecile range of 28 to 51).
This shift is already evident in Massa's Introductory Book of Anatomy (1536) where he discussed cranial sutures on the basis of "the heads of dead people in cemeteries.
bottae in a restricted area for many years and have correlated the closure of cranial sutures, including the basisphenoid, with known-aged individuals (Smith and Patton, 1980; Daly and Patton, 1986; Patton and Brylski, 1987).
Minor anatomical features that mainly evolved randomly, such as tiny bones on the skull formed by cranial sutures, provide a better comparison for groups living in different parts of the world, he asserts.
Prior to closure of the cranial sutures and obliteration of the fontanelle, hydrocephalus results in disproportionate head growth.
hoffmanni, based on the simplicity of cranial sutures and the lack of their closure/fusion (Figs.
The porosity of the bones appears towards the margins of, and parallel to, cranial sutures but does not extend to the sutures themselves.
The 3-D images of the skull are superior to the conventional 2-D view that is often limited to the cranial sutures due to the natural curvature of the skull.
Unlike more prominent traits such as skull breadth, these features -- including tiny bones formed by cranial sutures and small bridges of bone caused by excess growth -- confer few survival advantages and mainly evolve randomly, outside the influence of behavioral adaptations to a particular environment, Pardoe contends.
INTRODUCTION: Wormian bones are accessory bone which occurs within the cranial sutures and fontanelle.