There are two spcies of Wawa, W. cho and W. nyia. the latter larger and bearing a longer premolar 2 (in most cimolodonts the plagiaulacoid is the last lower premolar, but some lineages retain a peg-like remnant of another one in front of it; see them skulls). These are the earliest known gondwannan ptilodontoideans, likely having arrived from North America recently, a move repeated in both timelines by various mammal lineages and what makes this formation special. Unlike other northern invaders though, Wawa would go on to diversify, leading to the diverse clade known as Notoptilodontoidea, which would spread across not only South America but Antarctica and Australia as well, in a move similar to that of our marsupials. Wawa itself seems to have been arboreal and likely lead a lifestyle similar to that of possums and New World monkeys.
