It also suggests that Wareolestes produced milk to feed its young .
This shows Wareolestes replaced its teeth in the modern mammalian way ( diphyodonty ) , an important step in the evolution of true mammal characteristics .
It also suggests that Wareolestes produced milk to feed Wareolestes ' young .
This shows Wareolestes replaced its teeth in the modern mammalian way ( diphyodonty ) , an important step in the evolution of true mammal characteristics .