†superorder Deltatheridia Van Valen 1965
Parent taxon: Preptotheria according to M. C. McKenna 1975
Sister taxon: Tokotheria
Subtaxa: Zalambdodonta
Distribution:
• Paleocene of United States (1: Wyoming collection)
• Cretaceous of Uzbekistan (1)
Total: 2 collections each including a single occurrence