. Natural history. Zoology. THE ANIMAL KINGDOM. the teeth implanted in the premaxillary bones, which are always of a com- paratively simple type, with single roots, are termed incisors. In the great. Lower Jaw or the Gorilla. majority of Mammals, there are not more than three pairs of these teeth, although there may be four or five pairs in the Pouched Mammals. The first tooth in the upper jaw, which is implanted in the maxillary bone, and is very generally long and tusk-like, is termed the canine ; this tooth being also of simple type, and generally with a single undivided root. Behind this c
. Natural history. Zoology. THE ANIMAL KINGDOM. the teeth implanted in the premaxillary bones, which are always of a com- paratively simple type, with single roots, are termed incisors. In the great. Lower Jaw or the Gorilla. majority of Mammals, there are not more than three pairs of these teeth, although there may be four or five pairs in the Pouched Mammals. The first tooth in the upper jaw, which is implanted in the maxillary bone, and is very generally long and tusk-like, is termed the canine ; this tooth being also of simple type, and generally with a single undivided root. Behind this come a series of, at most, four pairs of cheek-teeth, which have gener- ally, except the first, two roots each, and, in ordinary Placental Mammals, are pre- ceded (as are tlie incisors and canine) by milk-teeth in the young. To these teeth, whicli may be reduced to a single pair, is applied the term, premolars. Behind these come the true molars, which have generally broad complex crowns and branching roots, and are not preceded by milk-teeth. In Placental Mammals there are but seldom more than three pairs of molars, but in Marsupials the ordinary TiQ. OP THE GoRtLiA. number is four. In the lower jaw the In the palate the three hindmoft teeth tooth bitnig in front of the upper canine are the molars, in advance of which are is the lower canine, in front of which are ^eS E:\Te ius5<%ltnilrj,?nfrj ^}^ "'f^"-^^- I" the Placental Mammals of which are the two pairs of incisors. these do not exceed three pairs, and are. 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 Lydekker, Richard, 1849-1915; Kirby, W. F. (William Forsell), 1844-1912; Woodward, Bernard Barham, 1853-1930; Kirkpatrick, R. (Randolph), b. 1863; Pocock, R. I. (Reginald Innes), 1863-1947; Sharpe, Richard Bowdler, 1847-1909;
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Keywords: ., bookauthorly, bookcentury1800, bookdecade1890, booksubjectzoology
