hyostylic

Century Dictionary and Cyclopedia

1. Having the lower jaw suspended from the skull by a special suspensorium: the opposite of autostylic.

Wiktionary

1. adj. anatomy 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.

GNU Webster's 1913

1. adj. (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.