The tympanic and periotic are both small and are fused together.
The periotic is not fused to the squamosal or to the small tympanic.
The tympanic and periotic are ankylosed together, but not to any other bones.
The tympanic, periotic and squamosal are ankylosed together.
The periotic and tympanic are welded together, but not with the squamosal.
The periotic capsule is ossified by a prootic centre, which meets the exoccipital behind.
In the higher Vertebrates the periotic cartilages may be developed continuously with the basilar plate (fig. 325).
In the region of the periotic cartilage a large number of bones may appear.
In the periotic there are usually three centres of ossification, first recognised by Huxley.
In the skull the squamosal region with the outer and posterior portion of the ear capsules (the periotic) are inflated.
periotic per·i·o·tic (pěr'ē-ō'tĭk)
adj.
Situated around the ear.
Of or relating to the bones immediately around the inner ear.
