As yet no remains have been found in the Nearctic Region, where Lemuroid remains occur so abundantly.
Nearctic: temperate and arctic North America, including Greenland.
The Turnstone breeds throughout the northern parts of the Nearctic and Palæarctic regions, as far as land is known to extend.
The genus is confined to the Palaearctic and the Nearctic regions.
The boundaries of the North American or Nearctic region have been sufficiently indicated.
It is the Bernicla glaucogaster of Brehm, and, as far as is known, breeds only in the Nearctic region.
In our part of the Holarctic, that is, the Nearctic, the familiar birds about us do not nest also in the tropical regions.
I have studied the baculum in chipmunks and in all the major supraspecific groups of Nearctic squirrels.