attachment of the upper jaw to the skull by means of a process on the palatoquadrate and the hyomandibular bone and by a direct connection between the jaw and braincase, e.g. some Elasmobranchii; basal gnathostomes, other than placoderms)

Dictionary of ichthyology. 2009.

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  • Amphistylic — Am phi*sty lic, a. [Gr. ? + ? pillar, support.] (Anat.) Having the mandibular arch articulated with the hyoid arch and the cranium, as in the cestraciont sharks; said of a skull. [1913 Webster] …   The Collaborative International Dictionary of English

  • amphistylic — am·phi·sty·lic …   English syllables

  • 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

  • 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

  • vertebrate — /verr teuh brit, brayt /, adj. 1. having vertebrae; having a backbone or spinal column. 2. belonging or pertaining to the Vertebrata (or Craniata), a subphylum of chordate animals, comprising those having a brain enclosed in a skull or cranium… …   Universalium

  • autostylic — | ̷ ̷ ̷ ̷+|stīlik adjective Etymology: aut + stylic : having the jaws connected directly with the cranium (as chimaeras, lungfishes, amphibians, and higher vertebrates) instead of indirectly by the hyoid arch sometimes distinguished from… …   Useful english dictionary

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