Assertion: marsupial | /r/HasProperty | the crown group
Facets:
Source sentences:
text: That there are no undisputed records of marsupials anywhere in Gondwana during the Mesozoic (let alone during the Middle Jurassic, as your map suggests) is also true, however, and that metatherians (not necessarily marsupials—marsupials are the crown group that includes the last common ancestor of the living species and all its descendants, whereas metatherians are the total group that includes everything that shares a more recent common ancestor with marsupials than with placentals; I was imprecise with those terms in my previous post) first occurred in Asia and North America during the Cretaceous is also true.