560.176 Lill A Lillegraven, Jason A. Lastest cretaceous mammals of upper part of edmonton formation of Alberta, Canada, And review of marsupial-placental dichotomy in mammalian evolution. (Lewrence Ka.) University of Kansas Publications, 1969. 122 p. ilus., 27 cm. (The University of Kansas Paleontological contributions. Article 50, Vertebrata 12)