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a.1.(Anat.) Having the mandible suspended by the hyomandibular, or upper part of the hyoid arch, as in fishes, instead of directly articulated with the skull as in mammals; - said of the skull.
References in periodicals archive ?
Hyostylic. Most modern fish (bony fish with fins) have a hyostylic jaw suspension, which is responsible for their unique ability to move their entire jaw apparatus forward independent of the brain case.