288 E. O. ULRICH REVISION OF THE PALEOZOIC SYSTEMS 



Page 



Derivation of the name and the type section 628 



Potosi dolomite 630 



Eminence chert 630 



Proctor dolomite 631 



Gasconade formation 631 



Roubidoux formation 632 



Jefferson City dolomite 632 



The Ozarkian in the southern Appalachian Valley 633 



Briarfield dolomite (new) 633 



Ketona dolomite 634 



Potosi ( ?) dolomite 634 



Basal division of the Knox dolomite ( s. st. ) 635 



Copper Ridge chert ( new ) 635 



Upper division of the Knox 637 



The Chepultepec chert formation (new) 638 



The Ozarkian in the upper Mississippi Valley 640 



The Ozarkian in other parts of North America 641 



In the Arbuckle and Wichita uplifts in Oklahoma 641 



In central Texas 642 



The Ozarkian in western North xVmerica 642 



Ozarkian formations in New York and New Jersey 643 



The Ozarkian in Pennsylvania — Kittatinny formation (Allen- 

 town limestone) 644 



The Ozarkian period in Newfoundland and Europe (>46 



Canadian period or system 647 



Definition of the term 647 



Authority for the name 648 



The term Beekmantown limestone 650 



Type sections of the Canadian system 651 



The Beekmantown in Maryland and southeast Pennsylvania 652 



The Beekmantown between Carlisle and Allentown 655 



Canadian deposits in central Pennsylvania 656 



The Canadian deposits in Oklahoma 661 



Extent and boundaries 661 



Subdivisions of the Arbuckle limestone 601 



Eopaleozoic section in the Wichita Mountains uplift (UU 



Guide fossils of the Ceratopea zone 664 



Canadian limestones in central and western Texas 666 



The Canadian rocks in north Arkansas and southern Missouri .... 667 



Yellville formation 667 



Age of the Phyllograptus and Tetragraptus faunas 670 



Canadian deposits in the Wells Creek basin of Tennessee 671 



Canadian limestones in the southern Appalachian Valley 671 



Character and extent 671 



Canadian limestone in Tuckaleechee and Wear coves 674 



The shale f acies of the Canadian 674 



The Levis shale type of sediments 674 



The Ouachita shale in Arkansas 676 



Age of the Dictyonema flabelliforme and Olenus zones 678 



