AAAWESOOOME! I'm a big William Stout fan and his stuff has always been an inspiration to me. It seems he's done concept art for all kinds of films! Every-now-in-then I find myself saying: "oh? He worked on that too?" hahaa.
(While Stout is well known for his sci-fi art... he is perhaps best known for his paleoart! He's done illustrations for a myriad of paleontological papers and official publications, murals for museums, dinosaur picture books and novels... the list goes on.)
That being said, I like the obviously theropod dinosaur inspired alien "hunter". You can often see dinosaur/prehistoric life inspiration in his creature art.