| 释义 |
gephyrocercal, a. Ichthyol.|ˌdʒɛfɪrəʊˈsɜːkəl|
[f. Gr. γέϕυρα bridge + κέρκος tail + -al.]
Having the caudal fin formed by the meeting of the dorsal and anal fins. So gephyrocercy |ˌdʒɛfɪrəʊˈsɜːsɪ|, gephyrocercal condition.
1886J. A. Ryder in U.S. Comm. Fish Rep. 1884 983 Gephyrocercy and gephyrocercal are terms which will apply to the type of caudal structure appearing normally in only a few forms, such as Mola and Fierasfer. Ibid. 991 Gephyrocercy.—This type of tail appears to be normally met with in only two forms, of Teleosts, namely, Mola and Fierasfer. Ibid., The interval so bridged by a secondary process of development leads to the formation of what we may call a gephyrocercal tail. 1939Nature 18 Mar. 455/2 The gephyrocercal tail with protruding axial supplement, the normal first dorsal,..and the form of the dermal armour of the head, are all typically cœlacanthid. 1955E. H. Colbert Evol. Vertebrates v. 68 Both these modern genera [of lungfishes] are characterized by gephyrocercal tails. |