The authors show a diagram of the "Maximum likelihood genealogy show the evolution of 2019- nCoV". Take a look at all the animals that are in the ancestry of this virus. It is astonishing. You probably can't read it -- it is a bit more legible in the original pdf -- but it includes birds (Thrush, Magpie, Robin, Sparrow, Moorhen, Night Heron, Wigeon, Turkey) and mammals (Mink, Beluga Whale, Pigs, Ferret, Feline, Camel, Bats, Rats, Cows, Rabbits, and Humans).
