Researches on the Structure, Organization, and Classification of the Fossil Reptilia. Part IX., Section 4. On the Gomphodontia

摘要: The Gomphodontia comprises animals with a Theriodont type of dentition, in which the molar teeth are expanded transversely, and have more or less tuberculate crowns, shown Diademodon . superior inferior opposed to each other, crowns become worn use, as Ungulate other Mammals, Iguanodont Reptiles. canine upper jaw appear be at their extremities. skull is known from genera Gomphognathus, Triachodon , Microgomphodon It appears show mammalian proportions aspect, definition large temporal vacuities by zygomatic arch, formed malar squamosal bones, separation those long narrow parietal crest. orbit eye, however, separated vacuity post-frontal bone, so that structure distinct obtains Ungulates, Lemurs, all Mammals similarly complete.