Report of the State Geologist. 257 



S. spinosa var. campestris. White, 1874. Carboniferous. This has 

 since been regarded as a synonym for S. octopUcata, Sowerby. 

 S. subelliptica, McChesney, 1860. Knobstone. 

 S. subtexta, White, 1862. Burlington. 

 P. transversa, McChesney, 1860. Chester. 



Syringothyris, Winchell. 

 S. alta, Hall, 1867. Chemung. 

 S. angulata, Simpson, 1889. Waverly. 

 S. carteri, Hall, 1857. Waverly. 

 S. cuspidata, Martin, 1796. Carboniferous. 

 S. extenuata, Hall, 1858. Kinderhook. 



S. gigas, Troost, 1841. (Cyrtia gigas.) Lower Carboniferous. 

 S. halli, A. Winchell, 1863. S^m. for S. extenuata. Hall. 

 S. randalH, Simpson, 1889. Waverly. 

 S. texta, Hall, 1857. Waverly and Knobstone. 

 S. typa, A. Winchell, 1863. Syn. for S. carteri, Hall. 



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