1849, Sketches in Natural History: History of the Mammalia ..., page 162:
THE GUAZU-BIRA (Cervus nemorivagus) is smaller and more delicately formed than the preceding species, which, however, it resembles in general habits and manners, inhabiting also the low moist woods of South America.
1892, Emmanuel Bourgade La Dardye, Ernst Georg Ravenstein, Paraguay: The Land and the People, Natural Wealth and ..., page 67:
[...] guazu vira, and guazu pucu. The rodents, too, are largely represented.
1894, Zoological Society of London, Proceedings of the General Meetings for Scientific Business of the Zoological Society of London, page 314:
[...] and the little Swamp Deer, or Guazu-virá, a single-pronged-horned deer of the brocket type, now also rare (probably Cerviis simplicicornis, Illiger) [...]
1901, Augustus Henry Keane, Central and South America,
page 469: [...] guazu vira, guazu pucu, etc. Of birds there is an endless variety, from the huge waders, such as the tuyuyu (Ciconia maguari), down to the tiniest humming-birds.
pages 547-548: Four species of the deer tribe, all called Guazu ("Great"), have been described—Guazu pucu (Cervus paludosus), whose home is about the streams of the marshy woodlands; Guazu-y (C. campestris), confined to the Campos; Guazu-pita (C. rufus), the Brazilian roe; and Guazu-bira (C. simplicicornis).
1950 (2015 edition), John Graham Kerr, A Naturalist in the Gran Chaco, Cambridge University Press (→ISBN), page 146:
It was only on retracing our steps to skin and cut up the cierbo already killed that Yaraitlik espied a Guazu vira (Coassus simplicicornis) walking along among the trees and brush. Chinerataloi and I hurried off to circumvent him ...
2010, Tim Burford, The Bradt Travel Guide Uruguay, Bradt Travel Guides (→ISBN), page 222:
In addition 60% of Uruguay's mammal species are found here, including carpincho (capybara), paca, otter, guazu-birá and pampas deer, and marine mammals such as sea lions and cetaceans.