holotherians
Technical term in paleontology and cladistics for a group that includes Kuehneotherium and all living therian mammals. Not used in everyday Japanese.
Holotheria is a clade that includes Kuehneotherium and extant Theria.
A modern scientific coinage from 全 (zen, 'all') + 獣 (jū, 'beast') + 類 (rui, 'kind/group'), translating the taxonomic name Holotheria.