therian
Concise Oxford English Dictionary © 2008 Oxford University Press:
therian /ˈθɪərɪən/ Zoology
▶noun an animal of the subclass Theria, which comprises the marsupials and placental mammals (i.e. all mammals apart from the prototherians). ▶adjective relating to therians.
– origin from mod. L. Theria, from Gk thēria ‘wild animals’.
'therian' also found in these Oxford entries:

