Mr. Alex D. Krieger's (pp. 355, 359) reference to the late J C. Jones’ date for Lake Lahontan calls for some clarifying comments. Lake Lahontan, the ancient lake in northr western Nevada which occupied 8500 square miles and reached several hundred feet above the modern lakes in its basin, Professor Jones believed, was not, as generally held, contemporaneous with the extensive Pleistocene glaciations in the adjacent mountains,1 but “the Lahontan stages occurred during the present era, with the survival of the fauna till the last thousand years” (1933, p. 96). The extinct fauna referred to included horses, elephants, camels, and Felis atrox (1925, p. 49; 1929, p. 539). Jones (1925, p. 4) did not correlate Lake Lahontan with other ancient lakes in the Great Basin, did not discuss their relationship, and objected to my introducing the obvious sister-lake in western Utah, Lake Bonneville, into the discussion.
Orographic origin of ancient Lake Bonneville