LIST OF AMERICAN FORMATIONS. 



1521 



Tonoloway limestone, Upper Oayugan, 

 West Virginia, Pennsylvania, and 

 Maryland. 



Totsen series, Silurian, Alaska. 



Trenton group, Upper Mohawkian. 



Trenton limestone, Mohawkian, New 

 York, etc. 



Tribes Hill limestone, Canadian, New 

 York. 



Tuscarora sandstone, Upper Medinan, 



1 Pennsylvania, West Virginia, and 

 Maryland. 



Tymochtee beds, Lower Monroan, Ohio, 

 and Michigan. 



Tyner formation, Middle Ordovician, 

 Oklahoma. 



Tyrone beds (=Bald Eagle), Cincin- 

 natian, Pennsylvania. 



Tyrone limestone, Black River, Ken- 

 tucky. 



Upper Blue limestone, Black River, Wis- 

 consin, etc. 



Upper Buff dolomite, Black River, Wis- 

 consin. 



Ute limestone, Cambrian-Silurian, Utah, 

 Nevada. 



Utica shale, Cincinnatian, New York, 

 Ohio, and Pennsylvania, etc. 



Valcour limestone, Chazyan, Champlain 

 Valley. 



Valdez formation, Silurian, Alaska. 



Variegated beds, Niagaran, West Ten- 



Vernon shales, Lower Cayugan, New 

 York. 



Versailles beds, Richmond, Ohio Valley. 



Vinalhaven rhyolite, Silurian ?, Maine. 



Viola limestone, Trenton, Oklahoma. 



Waco limestone, Clinton, eastern Ken- 

 tucky. 



Waits River limestone, Ordovician, Ver- 

 mont, 



Waldron shale, Upper Niagaran, Indiana, 

 Kentucky, and Tennessee. 



Wales series, Silurian, Alaska. 



W T appinger Valley limestone, Cambrian- 

 Ordovician, New York. 



Warren beds. See Arnheim. 



Washington phase of Waits River lime- 

 stone, Ordovician, Vermont. 



Waterlime. See Cayugan. 



Watertown limestone, Black River, New 



York and Canada. 



Waterville slates, Ordovician, Maine. 

 Waubakee limestone, Cayugan, Wis- 

 consin. 



Waukesha dolomite, Niagaran, Wisconsin. 

 Waynesville formation, Richmond, Ohio 



Valley. 



Wekwemikongsing, Maysville, Ontario. 

 Wells chert, Canadian, Tennessee. 

 Weskeaa quartz ite member, Cambrian- 



Ordovician, Maine. 



West Union limestone, Clinton, Ohio. 

 Westfield serpentine, Ordovician (?), 



Massachusetts. 



Whatley bed, Ordovician (?), Massachu- 

 setts. 

 Whitewood limestone, Early Silurian (?), 



Wyoming and South Dakota. 

 Whirlpool sandstone, Upper Medinan, 



New York and Ontario. 

 White limestone, Silurian, Colorado. 

 White Oak Mountain, Upper Medinan, 



Tennessee. 



Whites Bend limestone (= Laurel), Up- 

 per Niagaran, Tennessee. 

 Whitewater formation, Richmond, Ohio 



Valley. 

 Whitmores Ferry bed, Ordovician (?), 



Massachusetts. 



Wilbur limestone, Cayugan, New York. 

 Williamson shale, Clinton, New York. 

 Willow River limestone, Canadian, Iowa. 

 Wills Creek shale, Upper Cayugan, West 

 Virginia, Pennsylvania, and Maryland. 

 Wilmore limestone, Trenton, Kentucky. 

 Winchester limestone, Ordovician, Ken- 

 tucky. 



Winfield limestone, Canadian, Missouri. ' 

 Winnipeg sandstone, Ordovician, Mani- 

 toba. 



Wolcott limestone, Clinton, New York. 

 Woodburn division of Flanagan, Tren- 

 ton, Kentucky. 



Wykoff limestone, Richmond, Minne- 

 sota, Iowa. 



Wyoming division, Silurian (?), Texas. 

 Yellville limestone, Canadian, Arkansas. 

 Yule limestone, Early Silurian, Colorado. 



