The commission " conserved the usage of 17 specific names based on wild species, which are pre-dated by or contemporary with those based on domestic forms ", confirming " Bos primigenius " for the aurochs and " Bos gaurus " for the gaur.
42.
Studies of an 11, 300 11, 000-year-old trackway in south-western Canada showed that " M . primigenius " was in decline while coexisting with humans, since far fewer tracks of juveniles were identified than would be expected in a normal herd.
43.
Though the American bison ( Species : " Bison bison " ) is not only a separate species, but a member of a separate genus from domestic cattle ( " Bos primigenius " ), they are genetically compatibile and American bison can interbreed freely with cattle.
44.
The authors also questioned whether " M . columbi " and " M . primigenius " should be considered " good species ", considering that they were able to interbreed after supposedly being separated for a million years, but cautioned that more specimens need to be sampled.
45.
Though the American bison ( " Bison bison " ) is not only a separate species, but actually in a separate genus from domestic cattle ( " Bos primigenius " ), they clearly have a lot of genetic compatibility and American bison can interbreed freely with cattle.
46.
The "'woolly mammoth "'( " Mammuthus primigenius " ) is a species of mammoth that lived during the Pleistocene epoch, and was one of the last in a line of mammoth species, beginning with " Mammuthus subplanifrons " in the early Pliocene.
47.
"M . exilis " should not be confused with the mammoths of Wrangel Island or Saint Paul Island, which were small races of the woolly mammoth ( " M . primigenius " ) and which died out around 1700 B . C . and 4000 B . C ., respectively.
48.
Though the American bison ( " Bison bison " ) is not only a separate species, but actually in a separate genus from domestic cattle ( " Bos primigenius " ), it clearly has a lot of genetic compatibility with the latter, and American bison can interbreed freely with cattle.
49.
In 2016, a genetic study of North American mammoth specimens confirmed that " M . columbi " and " M . primigenius " interbred extensively, were both descended from " M . trogontherii ", and concluded that morphological differences between fossils may therefore not be reliable for determining taxonomy.
50.
The woolly mammoth was one of the last in a line of mammoth species, beginning with " Mammuthus subplanifrons " in the early Pliocene . " M . primigenius " diverged from the steppe mammoth, " M . trogontherii ", about 200, 000 years ago in eastern Asia.
