Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: Ivowo vaigara muBeringian North America munguva yePleistocene. Mazuva ano, rudzi rwunowanikwa muRussia (S. t. tatarica) runongowanika munzvimbo imwe chete (muRepublic of Kalmykia uye Astrakhan Oblast) uye munzvimbo nhatu muKazakhstan (Ural, Ustiurt, uye Betpak-Dala). Vamwe vanhu vokuUstiurt vanoenda kumaodzanyemba kuUzbekistan uye dzimwe nguva kuTurkmenistan munguva yechando. Yakatsakatika muPeople's Republic of China uye kumaodzanyemba kwakadziva kumadokero kweMongolia. Yaivhimwa zvikuru muRomania neMoldova kusvikira yanyangarika mumatunhu iwayo pakupera kwezana ramakore rechi18. S. t. mongolica inongowanikwa kumadokero kweMongolia.  Mubvunzo: VaUstiurt vakararama munguva ipi?
Pleistocene