mastoid fontanelle

mas·toid fon·ta·nelle

[TA] the membranous interval on either side between the mastoid angle of the parietal bone, the petrous portion of the temporal bone, and the occipital bone. Synonym(s): fonticulus mastoideus [TA], fonticulus posterolateralis ☆ , Casser fontanelle, posterolateral fontanelle

mas·toid fon·ta·nelle

(mastoyd fontă-nel) [TA] Membranous interval on either side between mastoid angle of parietal bone, petrous portion of temporal bone, and occipital bone.