- hyostylic
- hy·o·sty·lic
English syllables. 2014.
hyostylic
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Hyostylic — Hy o*styl ic, a. [Hyo + Gr. ? a pillar.] (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. [1913 Webster] … The Collaborative International Dictionary of English
hyostylic — suspension of the jaw in which the upper jaw loses any major direct connection with the cranium and the upper and lower jaws are supported solely by the hyomandibula, e.g. in Elasmobranchii and Teleostomes … Dictionary of ichthyology
hyostylic — … Useful english dictionary
fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with … Universalium
Fish — /fish/, n. Hamilton, 1808 93, U.S. statesman: secretary of state 1869 77. * * * I Any of more than 24,000 species of cold blooded vertebrates found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes… … Universalium
autostylic jaw suspension — a type of suspension where the upper jaw is connected directly to the chondrocranium (instead of fastened to the hyomandibular, the hyostylic suspension) by a process from, or fusion with, the palatoquadrate, e.g. in Dipnoi … Dictionary of ichthyology
methyostyly — a derivation of hyostylic jaw suspension in that the hyomandibula still plays a role in jaw suspension, but in this case the original elements have been replaced by dermal bone, and the hyomandibular is a reduced element at the ja … Dictionary of ichthyology
os symplecticum — (plural ossa symplectica)) symplectic (the small, paired, deep, endochondral bone joining the quadrate and the hyomandibular and supporting the interhyal in the hyostylic jaw (q.v.). It is cartilaginous in Acipenser and absent in Siluroidei and… … Dictionary of ichthyology
symplectic — the small, paired, deep, endochondral bone joining the quadrate and the hyomandibular and supporting the interhyal in the hyostylic jaw (q.v.). It is cartilaginous in Acipenser and absent in Siluroidei and Anguilloidei … Dictionary of ichthyology
amphistylic — lik adjective Etymology: amphi + stylic : having the upper jaw partly free from the brain case and braced by the hyomandibular cartilage (as in certain primitive sharks) compare autostylic, hyostylic … Useful english dictionary
