Much to my relief and delight, the /Pseudotribos/ paper is presently freely accessible via those wonderful eucynodonts at the Carnegie Museum. Obviously, I've downloaded a copy. http://www.carnegiemnh.org/vp/media/Luo%20et%20al%202007%20new%20Jurassic%20 shuotheriid%20Pseudotribos%5B8%5D.pdf