│ Usually hard │ │ │ │ │ to distinguish│ │ │ │ │ from Sangamon.│ │ │ │ │ Abundant loess│ │ │ │ │ in Mississippi│ │ │ │ │ Valley. │ │ │ │ │ _Iowan Stage._ │ │ │ │ │Known certainly │None. │Mylodon, Tapirus,│None known; but in│ │ only from Iowa│ │ Equus, │ general those of│ │ and Wisconsin.│ │ Taurotragus, │ the later │ │ Supposed to be│ │ Sangamona, │ stages. │ │ present along │ │ Bison │ │ │ New England │ │ latifrons, B. │ │ │ coast, Gay │ │ antiquus, │ │ │ Head to Maine.│ │ Ænocyon, │ │ │ │ │ Dinobastis, │ │ │ │ │ Smilodon, │ │ │ │ │ Smilodontopsis.│ │ │ _Sangamon │ │ │ │ │ Stage._ │ │ │ │ │Sangamon River, │Alton, Illinois; │None known to │Mylodon, a few │ │ Illinois. Old │ Kimmswick, │ have become │ horses, tapirs, │ │ soils just │ Missouri; cave in │ extinct during │ peccaries, │ │ above the │ Bexar County, │ this stage. │ Sangamona, │ │ Illinoian │ Texas; bluffs at │ │ Taurotragus, │ │ drift. Some │ Natchez, │ │ Symbos, Bison │ │ loess of this │ Mississippi; salt │ │ latifrons, B. │ │ stage. Cave │ mine at Petite │ │ antiquus, │ │ deposits in │ Anse, Louisiana; │ │ Elephas and │ │ Texas and in │ Cavetown and │ │ Mammut. │ │ the Alleghany │ Corriganville, │ │ │ │ Mountains. │ Maryland; Ivanhoe, │ │ │ │ │ Virginia; │ │ │ │ │ Whitesburg │ │ │ │ │ Tennessee; │ │ │ │ │ interglacial beds │ │ │ │ │ at Toronto, │ │ │ │ │ Ontario.