 
 <prompt> Wetin come later, the last common ancestor, or the marsupials? Based on the previous question, write a context wey contain the answer. E fit be 1 - 20 sentences. Context: <response>: ```Di oldest known fossil among di Eutheria ("true beasts") na di small shrewlike Juramaia sinensis, or "Jurassic mother from China", wey dem date to 160 million years ago for di Late Jurassic. Anoda eutherian, Eomaia, wey dem date to 125 million years ago for di Early Cretaceous, get some features wey dey common with di marsupials but no dey common with di placentals, evidence say dis features dey present for di last common ancestor of di two groups but later loss for di placental lineage. In particular:``` 