Some interesting casting has shaped up for debut director S. Craig Zahler's horror Western, Bone Tomahawk.  It looks like Kurt Russell (The Thing), Peter Sarsgaard (Green Lantern), Richard Jenkins (The Cabin in the Woods) and Jennifer Carpenter (Dexter) are all on board.  Bone Tomahawk "follows a sheriff (Russell), a gunslinger, a befuddled oldster (Jenkins) and a cowboy (Sarsgaard) as they attempt to rescue a group of captives (including Carpenter) from a band of cannibalistic troglodytes."  If you ask me, there just aren't enough movies with troglodytes these days.  Hit the jump for more.Variety reports that Zahler will make his directorial debut with Bone Tomahawk with the above-mentioned cast attached.  The film is currently being shopped to international buyers at AFM by Celluloid Dreams.  The bloody, violent and character-driven film is being produced by Dallas Sonnier and Jack Heller with an eye towards a spring production start in New Mexico.A screenwriter for The Incident, aka Asylum Blackout, Zahler has recently sold scripts for the hard-edged thriller, The Big Stone Grid, which follows two New York City detectives who discover an extortion ring operating in the city's underground, and The Brigands of Rattleborge, with Chan-wook Park in talks to direct.  That picture is another violent Western which follows a sheriff and a doctor as they hunt down bandits who terrorized and robbed some small town folk during a torrential storm.  It rose to the Black List in 2006, but has languished in development since then. Zahler has also sold the spec script Conflicts of the Last Progenitor, a post-Earth sci-fi picture that has been optioned by Andrew Adamson, the director of the first two Shrek and Chronicles of Narnia pictures.