gephyrocercaladj.
/ˌdʒɛfɪrəʊˈsəːkəl/ Ichthyology.
Having the caudal fin formed by the meeting of the dorsal and anal fins.
ΘΚΠ
the world > animals > fish > parts of fish > [adjective] > having fin(s) > having specific type of caudal fin
heterocercal1838
homocercal1838
gephyrocercal1886
orthaxial1886
homocerc-
1886 J. 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.
1886 J. A. Ryder in U.S. Comm. Fish Rep. 1884 991 The interval so bridged by a secondary process of development leads to the formation of what we may call a gephyrocercal tail.
1939 Nature 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.
1955 E. H. Colbert Evol. Vertebr. v. 68 Both these modern genera [of lungfishes] are characterized by gephyrocercal tails.
Derivatives
gephyrocercy n. /ˌdʒɛfɪrəʊˈsɜːsɪ/ gephyrocercal condition.
/ˌdʒɛfɪrəʊˈsɜːsɪ/ gephyrocercal condition.ΚΠ
18861 [see main sense].
1886 J. A. Ryder in U.S. Comm. Fish Rep. 1884 991 Gephyrocercy.—This type of tail appears to be normally met with in only two forms, of Teleosts, namely, Mola and Fierasfer.
This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018).
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adj.1886