Theriiformes
Theriiformes is a clade of mammals. The term was coined by Timothy B. Rowe in his doctoral dissertation, and is defined as the clade formed by the most recent common ancestor of multituberculates and Theria. Mammals more closely related to therians than to multituberculates are included in the clade Trechnotheria.
As multituberculates are usually considered more closely related to therians than monotremes are it is considered to be a subgroup of the mammalian crown group.