This was a shoot titled "Men are from Mars" and we took the Edger Rice Burroughs series "John Carter on Mars" as inspiration, using the old pulp paperback covers. This one was a take on the cover for "The Mastermind of Mars" Ace publ. http://burroughs.wz.cz/
Earlier (and later) you'll see a take on "John Carter of Mars" from the New English Library 1975 edition. http://homepage.ntlworld.com/m.hodder/jcofmars.html
Hey, you always say look to what's published to find poses. ;-)