Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
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connected to the .gov website. Share sensitive
information only on official, secure websites.
Note the extensive hollow spaces in the parietal, petrosal, and squamosal. Abbreviations: bo, basioccipital; fm, foramen magnum; lhv, lateral head vein; par, parietal; pet, petrosal; sq, squamosal.
