ginglymodi
Gin`gly*mo"di, n. Etym: [NL.; cf. Gr. Ginglymoid.] (Zoöl.) Defn: An order of ganoid fishes, including the modern gar pikes and many allied fossil forms. They have rhombic, ganoid scales, a heterocercal tail, paired fins without an axis, fulcra on the fins, and a bony skeleton, with the vertebræ convex in front and concave behind, forming a ball and socket joint. See Ganoidel.