| 释义 |
actinopterygian, a. and n. Ichthyol.|ˌæktɪnəʊtəˈrɪdʒɪən|
Also Actino-.
[f. mod.L. Actinopterygia, name of a group of fishes (E. D. Cope 1889, in Amer. Naturalist XXIII. 855), earlier -pteri (Cope 1872): see actino-, pterygium.]
A. adj. Of, pertaining to, or designating the group of ray-finned fishes, one of the three main groups of bony fishes, and containing most of the present-day varieties as well as many fossil kinds.
B. n. A fish of this group.
1891A. S. Woodward Catal. Fossil Fishes in Brit. Mus. (Nat. Hist.) II. p. xxii, The great group of Actinopterygian Teleostomi is that concerning which palæontology affords most extensive information. 1898― Outl. Vertebrate Palæontol. 81 This was the only type of Actinopterygian existing until the Permian period. 1977A. Hallam Planet Earth 240 (caption) An example of evolutionary trends in a group of animals is seen here in the evolution of actinopterygian fishes. 1979Nature 18 Jan. 176/2 The mutual relations of salmon (an actinopterygian), lungfish (a dipnoan) and cow (a mammal, a class which can be traced back to rhipidistian crossopterygians by way of reptiles and amphibians) are certainly worthy of serious consideration. |