POSTGLACIAL BIOTA OF THE GREAT LAKES REGION 191 



CLASS MAMMALIA 



Family Megatheritdae 



* Megalonyx jeffersonii (Desmarest) 



Family Tayassuidae 



* Platygouus compressus LeConte 



* Mylohyus nosulus (Leidy) 



Family Cervidae 

 Odocoileus virginianus (Zimmermann) 

 Cenus canadensis Erxleben 

 Rangifer caribou (Gmelin) 



* " muscatinensis Leidy 



* Cervakes scotti Lydekker 



* " borealis Bensley 

 i 



Family Bo\tdae 



* Symbos cavifrons (Leidy) 

 Oiibos moschatus Zimmermanii 



* Bo'dtherium sargenti Gidley 

 , * Bison lalifrons (Harlan) 



" bison (Linn.) 



Family Elephantidae 



* Mammut atnericanum (Kerr) 



* Elephas columbi Falconer =jacksoni and americanus. 



* " primigenius Blumenbach 



Family Muridae 

 Fiber zibethicus (Linn.) 



Family Castoridae 

 Castor canadensis Kuhl 



Family Castoroididae 



* Castoroides ohioensis Foster 



Family Canidae 

 Canis latrans Say 



VIII. Summary 

 The data embodied in the previous pages may be summarized under four 

 heads: 1. Duration of Glacial Lakes; 2. Repopulation of the Glaciated Area; 

 3. Variation in Climate as evidenced by the Biota; and 4. Percentage of 

 Living and Extinct Species; the Wabash Fauna. 



1. DURATION OF GLACIAL LAKES 



It is believed that the Glacial Lakes, while but temporary from a geological 

 standpoint, still persisted for a period sufficiently long enough to allow living 

 organisms to occupy them and become well established. The length of time 

 was also sufficient to permit the building up of huge beaches and the cutting 



