1150 NEW YORK STATE MUSEUM 



The views as above expressed by Lindsley seem not to have 

 been much in accord with those of contemporaneous writers, and, 

 in fact, we are not altogether certain that Lindsley himself always 

 retained the conclusions given in his paper. Dale, 1 in a paper 

 written at about the same time, refers to the upper Niagara beds 

 of Lindsley in a manner which expresses doubt of their actual 

 existence. Prof. W. M. Davis 2 in a later paper intended, in part 

 at least, to serve as a supplement to the earlier ones of Lindsley 

 and Dale, entirely ignores the section at Rondout as construed by 

 Lindsley and gives 70 feet as the combined thickness of the water- 

 lime (= Salina + Cobleskill -f- Rondout) and the Tentaculite 

 ( = Manlius) limestone. The Coralline (= Wilbur) limestone is 

 given a thickness of 6 to 8 feet. This measurement as well as 

 the preceding one is credited to Lindsley. 



Fauna of the Wilbur limestone 



The Wilbur limestone is fossiliferous wherever it has been 

 examined. One of the best localities for the collection of its 

 fossils is in the old mines at Rondout. The limestone contains 

 fossils throughout its whole thickness, but collecting is best near 

 the top, where the overlying cement has been removed for a time 

 sufficient to allow the rock to weather. This requires but a com- 

 paratively short period. The following species have been col- 

 lected from the Wilbur limestone, and it is quite probable that 

 the list will be increased when more extensive collections shall 

 have been made at other localities. 



1 Favosites cf. niagarensis Hall 



2 Halysites catenulatus Linn. 



3 Enterolasma caliculus Hall 



4 Bryozoan sp. undet. 



5 Atrypa reticularis Linn. 



6 Camarotoechia neglecta Hall 



7 Leptaena rhomboidalis Wilck. 



8 Orthis hybrida Sow. 



9 Orthothetes interstriatus Hall 



10 Orbiculoidea cf. tenuilamellata Hall 



1 Am. Jour. Sci. 1879. 18:294. 

 2 Am. Jour. Sci. 1883. 26:389-95. 



