From the introduction:
Saurian: “Did not learned men, too, hold, till within the last twenty-five years, that a flying dragon was an impossible monster? And do we not now know that there are hundreds of them found fossil up and down the world? People call them Pterodactyls: but that is only because they are ashamed to call them flying dragons, after denying so long that flying dragons could exist.”
- - Charles Kingsley, The Water Babies
Like their behemoth kin the Saurian are relics of an ancient time and unknown to nearly all inhabitants of the worlds of D&D. Saurian struggle to uphold time honored traditions while they maintain the ruins of their once decadent city states.