Heymann et al., 1966) . , , , , .

(Magura, Youndegin, Cosby, Creek, Tolu-ca, Smithvilla, Canyon Diablo) , , (Haidinger, Partsch, 1846; Weinschenk, 1899; Fletcher, 1887; Huntington 1894; , 1970). , . , , (Grenville-Wells, 1952). , , .