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The Silurians, also known as Earth Reptiles, Eocenes,Psionosauropodomorpha and Homo reptilia were a species native to Earth that pre-dated humanity. Technologically advanced, they lived alongside their aquatic cousins, the Sea Devils. Unlike other species, Silurians showed an important intraspecific variation, with vast differentiation between breeds, such as the number of eyes, the formation of their pupils and the colour of their skin.
- The Silurian located in Silurian Lair is based on third tribe of Silurians found in Wales.