It may be added that there are some marsupials, such as the wombat, koala, marsupial ant-eater and the dasyures, FIG.
Here may be noticed three genera of large extinct marsupials from the Pleistocene of Australia whose affinities appear to ally them to the wombat-group on the one hand and to the phalangers on the other.
On the other hand, the considerably smaller Nototherium, characterized by its sharp and broad skull and smaller incisors, seems to have been much more wombat-like, and may perhaps have possessed similar burrowing habits.
Bear, Australian.-See Wombat, below.
Wombat, Koala or Australian Bear.
WOMBAT, the title of the typical representatives of the marsupial family Phascolomyidae (see Marsupialia).
All the teeth are Tasmanian Wombat (Phascolomys ursinus).
The wombat of Tasmania and the islands of Bass's Straits (P. ursinus), and the closely similar but larger P. platyrhinus of the southern portion of the mainland of Australia, belong to this group. On the other hand, in the hairy-nosed wombat (P. latifrons) of Southern Australia, the fur is smooth and silky; the ears are large and more pointed; the muzzle is hairy; the frontal region of the skull is broader than in the other section, with well-marked postorbital processes; and there are thirteen ribs.
The only noise the Tasmanian wombat makes is a low hissing, but the hairy-nosed wombat is said to emit a short quick grunt when annoyed.
The large wombat of the mainland is variable in colour, some individuals being pale yellowish brown, others dark grey and some black.