. Comparative dental anatomy. Teeth; Dentistry. ¥*%v. Fig. 17.—Phyletic History of the Molar Cusps. (After Osborn.) a, The Reptilian stage. (Haplodont.) b, Early Mammalian stage. (Triconodont.) c, Triangular stage. (Tritubercular molar.) d, Quadritubercular Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Thompson, Alton Howard, 1849-1914; Dewey, Martin, 1881-. St. Louis, C. V. Mosby

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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherstlou, bookyear1915