One of the mysteries of the English language finally explained.
1(of fish scales) hard and bony with a shiny enamellike surface.
- ‘The actinopterygians quickly jettisoned their ganoid scales and thus dispensed with the need for most endochondral bone.’
- ‘Actinopterygians may have ganoid, cycloid, or ctenoid scales, or no scales at all in many groups.’
- ‘This species has specialized scales, which are called ganoid scales, and it has nostrils or nares on tentacles that protrude from the head.’
- ‘They also possess a heterocercal caudal fin and remnants of ganoid scales; both are uncommon among extant actinopterygians.’
- ‘Gar species in North America are easily recognized by their long snouts, sharply toothed jaws, non-overlapping and diamond shaped ganoid scales, and posterior placement of dorsal and anal fins on the body.’
- 1.1 (of a fish) having ganoid scales.
- ‘The purpose of this research is to study ganoid fish taphonomy, specifically, how each type of fish decomposes, including anatomical location and extent of postmortem damage, and possibly, its cause.’
A primitive fish that has ganoid scales, e.g., a bichir, sturgeon, or freshwater garfish.
- ‘I tried to follow his scheme of division into the order of ctenoids and ganoids, with the result that I found one of my species of side-swimmers had cycloid scales on one side and ctenoid on the other.’
- ‘In the collection of ganoids the most complete is representation of Acipenseriformes, mainly of acipenserids proper.’
- ‘The ganoids had already reached their evolutionary climax in the Permian and Triassic, some 270-190 million years ago; today they are few in number when compared with the dominant bony fishes.’
- ‘Bony fishes, lungfishes, & most ganoids - retain highly cartilaginous neurocranium that is covered by membrane bone’
- ‘In the ganoids the upper lobe of the tail fin is the largest.’
Mid 19th century: from French ganoïde, from Greek ganos ‘brightness’.
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