Sutures are found between bones of the skull. In fetal skulls the sutures are wide to allow slight movement during birth. They later become rigid (synarthrodial).
Cranial sutures, joining the bones of the cranium.
Gomphoses, the joints between the roots of the teeth and their sockets (or alveoli) in maxilla and mandible.
See also: condyloprotector , arthritis.
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Obliteration of the sutures of the vault of the skull takes place as age advances. This process may commence between the ages of thirty and forty, and is first seen on the inner surface, and some ten years later on the outer surface of the skull.
Apert syndrome -- a condition caused by the premature closure of the sutures of the skull bones, resulting in an altered head shape, with webbed fingers and toes. Autosomal dominant.
In each case the fold pattern of sutures became more complex. These sutire patterns are fantastic characters for identifying species, making ammonoids excellent index fossils.
dehiscence. Opening naturally and regularly along lines of weakness; in fruits, opening along sutures to release seeds.
The cephalopods recovered from the extinction of the goniatites and developed a remarkably similar group, the ceratites. These coiled, chambered animals had slightly more complex sutures than did the goniatites.
 See also: Trans, Class, Long, Human, Tissue
  
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