Peramuridae

Peramurids Temporal range: Late Jurassic-Early Cretaceous
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Clade:	Cladotheria
Clade:	Zatheria
Order:	†Peramura McKenna, 1975
Family:	†Peramuridae Kretzoi, 1946
Genus
Afriquiamus Kiyatherium Kennetheredium Magnimus Minimus ?Tendagurutherium (possibly an australosphenidan instead) Peramus Palaeoxonodon Abelodon Pocamus Kouriogenys Peramuroides

The family Peramuridae is a possible ancestor of early therians. The only certain representative (Peramus) lived in the Late Jurassic and Early Cretaceous.

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Wikipedia