POSTGLACIAL BIOTA OF THE GREAT LAKES REGION 173 



The remains of elephants, mastodons, and other mammals have been noted 

 in several places in Iowa, in strata referable to post-Wisconsin time. Miss 

 Anderson 195 and Dr. Hay 196 mention the following: 

 Mammut americanum. 



Carroll County. Near Carroll, distal end of a tibia (Hay, page 381). 

 Dallas County. Adel, in peat deposit filling 'kettle-hole' on Wisconsin 

 drift; a complete skeleton (Calvin, Bull. Geol. Soc. Amer., XXII, page 215; 

 Hay, page 382). 



Greene County. Scapula and humerus from Rippey. (Hay, page 382). 

 Elepkas primigenius. 



Cerro Gordo County. Near Clear Lake, lower jaw; Mason City (T. 76 

 N., R. 20 W., Sect. 11, Mason Township), molar from Gabler gravel pit (Hay, 

 pages 85, 429). 



Floyd County. Marble Rock, teeth and tusk from gravel pit, deposit in 

 Wisconsin valley train (Hay, page 434). 



Lyon County. Rock Rapids, atlas in gravel at depth of 5 feet. Vertebrae 

 and distal end of humerus from same sand pit at depth of 28-30 feet in Wis- 

 consin valley train (Hay, page 439). 



Sac County. Marble Rock, teeth and tusk from gravel pit, deposit of 

 Wisconsin valley train (Hay, page 434). 

 Bison bison. 



Webster County. Second terrace, at mouth of ravine, two and one-half 

 miles north of Lehigh, under 6 feet of silt. Teeth and other bones with articles 

 of Indian workmanship (Wilder, Geol. Iowa, XII, page 190; Hay, p. 315). 



Crawford County. Near Deloit, part of skull in canal excavation for pur- 

 pose of straightening Boyer River; probably recent (Hay, page 315). 



Hardin County. From well near Hubbard, portion of skull (Hay, page 

 315). 



Ovibos moschatus. 



Fayette County. Clermont Township, section 35, portion of skull in 

 clay at depth of about 26 feet below the surface (Hay, page 297). 

 Wapello County. Ottumwa, portion of skull (Hay, page 297). 

 A goodly number of vertebrate records are known from Iowa, which are 

 in deposits that cannot be certainly placed in any interglacial interval. Many 

 of these are probably of post- Wisconsin age; others have doubtless been carried 

 from interglacial strata and redeposited in the beds of rivers, on sand bars, 

 and in other places. For the sake of completeness, and to call especial atten- 

 tion to these derelicts, these records are here listed (compiled from the lists 

 of Anderson and Hay, in works cited). 



155 Augustana Library Publications, V, 1905. 

 1S « Hay, Iowa Geol. Surv., XXIII, 1914. 





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