Article du Bulletin
The relationship of the amphiberigian marmots (Mammalia, Sciuridae) [Parenté des marmottes amphibéringiennes].
Hoffman R.S., Koeppl J.W. & Nadler C.F. · 1979 · Occas. Papers Mus. nat. Hist. Univ. Kansas, 83, 56pp.
Résumé
They proposed an alternative origin for M. broweri—namely, that it dispersed into North America from Asia during the Pleistocene and is most closely related to the Russian species M. camtschatica.