Lacertian
Usage examples:
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What the Protamniota were like, I do not suppose any one is in a position to say, but I cannot think that the thoroughly Lacertian Protorosaurus had anything to do with them.
Thomas Henry Huxley in "Critiques and Addresses". -
Although the head is wanting in all the examples yet found, they clearly belong to the Lacertian order, and are therefore of a higher grade than any other vertebrate animal hitherto found fossil in a Palaeozoic rock.
Sir Charles Lyell in "The Student's Elements of Geology".