The Silurians first appeared in Doctor Who back in 1972 in a face off with the Third Doctor. They came back a couple of times in Classic Who before their appearance against the 11th Doctor, for which they got a pretty major redesign.
And it's that redesign that this cosplay is based on. It's a pretty impressive recreation too. the face makeup alone is very complex.
You can see more photos at the link.
Doctor Who Cosplay : Silurian Warrior by Eoghann Irving, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.