Explorations and field-work of the Smithsonian Institution in .. . o ^ 5 •- S ^ 5 O O J o o^ •;3 g >,• t3 - 1- t:3 L- ^ >>a D -O J OJ be W _ oc ^03 ni ^ bfi O bc- i 1^ n^. U °«_rt Uh o3 03 -rcu O ^ 12 SMITHSONIAN INSTITUTION fossiliferous. In Iowa the party was guided by Dr. Stainbrook, whohas been a student of the Iowa Devonian for many years. It has long been knowm that the Cedar Valley formation holds nofossils relating it to the middle Devonian of southwestern present studies in Iowa were made to prepare the party to investi-gate Devonian rocks in the western part of
Explorations and field-work of the Smithsonian Institution in .. . o ^ 5 •- S ^ 5 O O J o o^ •;3 g >,• t3 - 1- t:3 L- ^ >>a D -O J OJ be W _ oc ^03 ni ^ bfi O bc- i 1^ n^. U °«_rt Uh o3 03 -rcu O ^ 12 SMITHSONIAN INSTITUTION fossiliferous. In Iowa the party was guided by Dr. Stainbrook, whohas been a student of the Iowa Devonian for many years. It has long been knowm that the Cedar Valley formation holds nofossils relating it to the middle Devonian of southwestern present studies in Iowa were made to prepare the party to investi-gate Devonian rocks in the western part of the southern peninsulaof Michigan in order to detect similarities, or a correlation, betweenIowa and Michigan. In and about the resort village of Petoskey on the west side ofMichigan the upper part of the middle Devonian is exposed in quarriesand in cliffs on the shore of Lake Michigan. This section has beenseparated into three divisions ; the uppermost or Petoskey formation,contains numerous fossils which suggest more or less vaguely theupper member of
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscienti, bookyear1912
