‖ ˈDipterus Palæont.
[mod.L., f. Gr.: see dipter.]
A genus of Palæozoic dipnoous fishes, having two dorsal fins, opposite the ventral and anal respectively. Hence dipˈterian a. and n., belonging to, or a member of, this genus.
| 1842 H. Miller O.R. Sandst. (ed. 2) 103 The Dipterus or double-wing, of the Lower Old Red Sandstone. 1847 Ansted Anc. World iv. 70 These ancient fishes (Dipterians). 1854 F. C. Bakewell Geol. 29 Other fishes, of which the dipterus is the type, bear more resemblance to fishes of the present day. |