Some, however, of the northern temperate forms would almost certainly have ascended any adjoining high land, where, if sufficiently lofty, they would have long survived like the Arctic forms on the mountains of Europe.
Iparraldeko klima epeleko formetako batzuk, hala ere, inguruetako goierriren batera igonen ziren ia ziur, eta han, herrialdea behar bezain garaia izanez gero, luzaro biziraunen zuten, forma arktiarrek Europako mendietan bezala.