LIST OF FOSSILS. 143 



White Coll. Collection sold to Michigan Univ., Ann Arbor, 



Michigan, by Dr. C. A. White. 

 Wis. St. Coll. State Collection formerly at Madison, Wis., 



part of which has been destroyed by fire. 



ABBREVIATIONS USED TO DENOTE GEOLOGICAL 

 FORMATIONS. 



C. M. Coal measures. 



Cret. No. 4. Number 4 of Meek & Hayden's Cretaceous sec- 

 tion of the Upper Missouri regions = Dakota. 



Chester. Chester limestones or Kaskaskia group. 



Cret. L. M. Cretaceous Lower Marls of New Jersey. 



Cret. M. M. Cretaceous Middle Marls of New Jersey. 



Cret. U. M. or Up. M. Base of Upper Marls of New Jersey 

 underlying the Farmingdale or Eocene beds. 



H. R. or Hud. Riv. The Hudson River or Cincinnati beds. 



L. Held, or L. Helderb. Lower Helderberg formations of 

 New York. 



L. Carb. Lower Carboniferous or Sub-carboniferous. 



Quebec. Metamorphic or disturbed Lower Silurian beds, 

 exact age not determined. 



Up. Carb. Upper Carboniferous or Coal Measures. 



Up. Helderb. Upper Helderberg limestone = Corniferous of 

 Authors. 



Anxals N. Y. Acad. Sci., XII, November 15, 1899. — 11. 



