and that the present arctic productions then lived on the broken land still nearer to the pole. Now, if we look at a terrestrial globe, we see under the Polar Circle that there is almost continuous land from western Europe through Siberia, to eastern America.
Horregatik onar dezakegu egun 60°ko latitudean bizi diren organismoak Plioceno aldian iparrerago, polo inguruan, 66°-67°ko latitudean bizi zirela, eta egungo ekoizkin arktiarrak orduan, polotik oraindik hurbilago dagoen herrialde zatituan bizi zirela.