Members of the metatherian genus Swaindelphys were previously known from Swain Quarry in south-central Wyoming and the Nacimiento Formation in the San Juan Basin, New Mexico, and now, from the Black Peaks Formation of west Texas. Life reconstruction of Swaindelphys. Image credit: Kristen Tietjen. The newly-identified species lived in what is now Texas during the Paleocene epoch, some 60 million years ago. Named Swaindelphys solastella, the animal...
