halosaurian Palæont.
(ˌhæləʊˈsɔːrɪən)
[f. mod.L. Halosaurus, f. Gr. ἁλο- sea + σαῦρος lizard: see -ian.]
A marine saurian, as the extinct ichthyosaur or plesiosaur.
| 1884 tr. Claus' Zool. 177 The Halosaurians, with their best known genera Ichthyosaurus and Pleiosaurus, are entirely peculiar to the secondary period. |