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n.1.(Zool.) 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.
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The Ginglymodi are made up of the seven recognized species of gars, and the Halecomorphi now consist of a single species, Amia calva, commonly known as the bowfin.
L1A L1B L2 Osteichthyes Actinopterygii Ginglymodi Lepisosteiformes Lepisosteidae Lepisosteidae indet.
2), Amia and Lepisosteus were chosen in order to have two extant outgroup taxa in the analysis representing both the Halecomorphi and the Ginglymodi (see Fig.