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a.1.(Anat.) Having the mandibular arch articulated directly to the cranium, as in the skulls of the Amphibia.
References in periodicals archive ?
These designs are called amphistylic, hyostolic, and autostylic.
In the autostylic architecture, the palatoquadrate is essentially fused to the chondrocranium.
At this point in the evolutionary process, the palatoquadrate was completely fused with the chondrocranium to form a true autostylic jaw suspension, and it was covered almost entirely by dermal bone.