Annales Zoologica Fennici 28:151‐163. Azzaroli, A. 1995. A synopsis of the Quaternary species of Equus in North America. Bollttino della Societa Paleontologica Italiana. 34:205‐221. Azzaroli, A., and ...
If we make a taxonomic sandwich between a Equus quagga, the Plains zebra ... separated by millions of years of evolution, these three species sometimes mix and match their mates, producing ...