COMMON ANOPLOTIHERE. 435 
depression in each lobe, @ 0’, concave towards the outer side 
of the crown,—this side being im- Fig. 178. 
pressed by two parallel excava- 
tions, dd. The peculiar characte- 
ristic of the upper molar of the 
Anoplothere and that by which it 
may be most readily distinguished 
from a molar of the Paleotherium, 
is the large conical tubercle a at 
Upper molar, nat. size, of Ano- 
plotherium commune.  Bin- 
stead, Isle of Wight. 
the wide entry of the valley 6. 
The two points of the outer con- 
tinuous border of the two lobes are first abraded; a 
double crescentic field of dentine is next exposed, with 
a detached island on the summit of the internal cone: 
this, afterwards, from the minor depth of the valley in 
front of its base, becomes blended with the anterior lobe, J’, 
from which also the erescentic enamel fold is first oblite- 
rated, and the pattern of the grinding-surface, which at 
first resembled that of the Ruminant, is reduced to that 
of the Paleothere (fig. 110) and Rhinoceros (fig. 122).* 
The lower incisors and canines much resemble those 
above. The molar series here, also, consists of four pre- 
molars and three true molars; to the latter belongs the 
tooth discovered by Mr. Thomas Allan of Edinburgh, in 
the lower freshwater limestone quarry at Binstead, which 
is figured by Dr. Buckland, in the ‘ Annals of Philosophy,’ 
vol. x. (1825), p. 861, in a brief memoir containing the 
first announcement of the remains of the peculiar extinct 
Pachyderms of the Paris basin in the analogous basin of 
eocene freshwater deposits in Hampshire. The tooth 
* The three principal stages of attrition are well displayed in the fossil upper 
jaw of the Axoplotherium commune from the Montmartre gypsum, figured by 
Cuvier in the ‘ Ossemens Fossiles,’ 4to.,'1822, tom. iii. pl. xlvi. fig. 2. 
F FQ 
