saola

2013, C. Michele Thompson, 10: Would a saola by any other name still be a saola?, Hue-Tam Ho Tai, Mark Sidel (editors), State, Society and the Market in Contemporary Vietnam, Taylor & Francis (Routledge), page 185, The current consensus is that the saola is so rare and so solitary in terms of genetic relatives that it should be placed not only in its own separate genus (Pseudoryx) but also in its own tribe (Pseudorygini) within the subfamily Bovinae.

2015, William deBuys, The Last Unicorn: A Search for One of Earth's Rarest Creatures, Hachette (Little, Brown and Company), unnumbered page, It is surprising, twenty years after saola first attracted the world's attention, that so little about the species is known.