A Bilateral Division of the Parietal Bone in a Chimpanzee; with a Special Reference to the Oblique Sutures in the ParietalPART IV.--A complete Mosasaur Skeleton. By Henry FairfieldChapter 312 wordsPublic domainOsborn. Pp. 165-188, pll. xxi-xxiii, with 15 text figures. October 25, 1899.