KINDERHOOK FAUNAL STUDIES. IV. THE FAUNA 

 OF THE GLEN PAEK LIMESTONE.* 



Stuabt Weller. 

 Introduction. 



The attention of the writer was first directed to the exceed- 

 ingly interesting fauna described in the present paper, by Mr. 

 E. O. Ulrich of the United States Geological Survey, and two 

 trips were made to the locality in the Autumn of 1904 for the 

 purpose of securing a quantity of the material for study. Two 

 barrels of the abundantly fossilif erous limestone were secured, 

 and enough of this material has been broken up to supply a 

 good representation of the fauna. 



The locality where the fauna occurs is at Goetz's lime 

 quarry, just below Glen Park station on the St. Louis, Iron 

 Mountain and Southern Railroad, about twenty-five miles 

 south of St. Louis, in Jefferson County, Missouri. In order 

 to give a proper understanding of the stratigraphic relations 

 of the bed bearing the fauna it will be necessary to describe 

 briefly the entire section at this locality. Starting from the 

 bottom, the following section is well exposed in the quarry, 

 and in the railroad cut and the slope above, at the eastern side 

 of the same hill. The lower layers are best exposed in the 

 quarry side of the hill, while the higher beds are only to be 

 seen above the railroad cut. 



1. The quarry rock. A light colored highly crystalline 

 limestone with many fossils. The fossils occur conspicuously 

 in several bands, and consist of bryozoa, brachipods, pelecy- 

 pods, gastropods, trilobites, etc., many of them finely pre- 

 served. The fauna indicates the Trenton age of the limestone, 

 but it is quite different from the fauna of the Trenton lime- 

 stone of the east. This limestone is well exposed at many 



* Presented by title to The Academy of Scienoe of St. Louis, June 6, 

 1905. 



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