296 PROBOSCIDIA. 
plete specimen hitherto recovered of the bony framework and 
dentition of the Mastodon angustidens ; and not a fragment 
of a bone or tooth of the Mastodon has yet been found in 
these newer pliocene and post-tertiary deposits of England, 
which are so rich in remains of the Mammoth. 
In other parts of the world the genus Mastodon, under 
different specific forms from our European Mastodon angus- 
tidens, has continued to be represented during a later epoch, 
and to have been contemporaneous with the Mammoth, or 
other extinct species of Elephant. In certain localities in’ 
North America, famous for remains of the Mastodon gigan- 
teus, as Big-bone Lick, the Mammoths bear to the Masto- 
dons a proportion of one to five.* 
A species of Mastodon, nearly allied to the M. angus- 
tidens by the form of the molar teeth, is associated with 
the Elephantoid Mastodon, and with a true species of 
Elephas, in the tertiary formations of the Sub-Himalayan 
range. Another species of Mastodon, also nearly allied 
to the M/. angustidens, if we may judge from the con- 
figuration of a molar tooth, has left its remains in the 
ossiferous caves, and post-tertiary, or newer tertiary de- 
posits of Australia.f From the conformity of the molar 
teeth, Cuvier regarded a Mastodon, whose remains have 
been discovered in Peru, as identical in species with the 
Mastodon angustidens of Kurope. 
We may therefore conclude, that the gigantic probos- 
cidian modification of the Mammalian type was first mani- 
fested on our planet under the generic form of the Masto- 
don, and with teeth which differed less from those of the 
older tapiroid Pachyderms, than do the grinders of the true 
Elephants. No genus of quadruped has been more ex- 
tensively diffused over the globe than the Mastodon. From 
* Dekay, ‘ Fauna of New York,’ p. 102. + Annals of Natural History, 1844. 
