...
These, as I before observed, are those of the order which never havemore than two incisors in the upper jaw, and the enamel on these isrestricted to the front of the tooth... 
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...Ro' dent, mammals with curved self-sharpening incisor teeth, order includingmice, rats, squirrels, rabbits, etc...
Worrallo Whitney 「A Guide for the Study of Animals」
...—f The inferior maxillary bone, containing the upper incisor teeth...
Richard L. Allen 「Domestic Animals」
...The exposed incisor teeth, the short head and upturned nostrils, give these cattle the most ludicrous, self-confident air of defiance...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...The lamb, when newly dropped, is devoid of incisor teeth, though thetwo central ones are occasionally above the gum even at this earlyperiod...
Ambrose Blacklock 「A Treatise on Sheep:」
...The mouth of the lamb newly dropped is either without incisor teeth orit has two...
Robert Jennings 「Sheep, Swine, and Poultry」
...Aging white-tailed deer byannuli in the cementum of the first incisor...
L. David Mech 「Ecological Studies of the Timber Wolf in Northeastern Minnesota」
...—from the exoccipital condyle to the most posteriorpoint on the border of the alveolus of the upper incisor...
Sydney Anderson 「Subspeciation in the Meadow Mouse, Microtus montanus, in Wyoming and Colorado」
...—from the posterior border of the alveolus of the thirdupper molar to the posterior border of the alveolus of the incisor...
Sydney Anderson 「Subspeciation in the Meadow Mouse, Microtus montanus, in Wyoming and Colorado」
...sawrockensis differs in: incisor less procumbent;masseteric ridge extending farther anteriorly; anterior cingulum of m2 slightlylarger...
Robert L. Packard 「Speciation and Evolution of the Pygmy Mice, Genus Baiomys」
...kolbi differs in: molar row longer; m3 larger; jawlarger; diastema not so acutely curved; incisor shorter, narrower transversely,more proödont...
Robert L. Packard 「Speciation and Evolution of the Pygmy Mice, Genus Baiomys」
...brachygnathus differs in: incisor more slender, shorter,more proödont; diastema shorter...
Robert L. Packard 「Speciation and Evolution of the Pygmy Mice, Genus Baiomys」
...minimus
differs in: anterior median fold deeper; incisor longer, more recurved, lessproödont; molars slightly more depressed (though worn)...
Robert L. Packard 「Speciation and Evolution of the Pygmy Mice, Genus Baiomys」
...Those of the first sub-orderhave two incisor teeth in the upper jaw; those of thesecond have four...
Various 「Natural History in Anecdote」
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