An
order of subclass
Theria of class
Mammalia,
Phylum Chordata,
Kingdom Animalia. There are over 260
species of
marsupials. The six major groups of
marsupials are:
Koalas and
wombats do not fit into one specific group.
Sources:
http://urbania.kcizone.com/marsupials/
http://www.geocities.com/RainForest/9971/chordat.htm