CONTENTS. 



Paga 



LIST OP WOOD CITS XIII 



LIST OF ERRATA XV 



LETTER TO DR. F. V. HAYDEN XVII 



INTRODUCTORY REMARKS XIX 



CllKTACKOUS FORMATION XXI 



Section of Cretaceous format iou ou the Missouri XXIII 



General seutiou of the Cretaceous rocks of Nebraska XXIV 



Subdivisions of the Upper Missouri undoubted Cretaceous series, and their geographical 



extension west, of the Mississippi, individually considered XXVI 



Dakota group - •- XXVI 



Fort Benton group XXVIII 



Niobrara group XXX 



Fort Pierre group XXXIII 



Fox Hills group XXXV 



New Mexican Cretaceous section XXXVII 



Relations of the Upper Missouri Cretaceous beds to those east of the Mississippi XXXVIII 



Section of Cretaceous rocks of Mississippi XXXVIII 



Alabama section XXXIX 



New Jersey section XLI 



Parallelism of the subdivisions of the Upper Missouri Cretaceous series with those of the 



same in Europe XLI1I 



Fresh- and Brackish-water Lignitk deposits of the Upper Missouri XLVII 



Judith River group XLVII 



Section of the Judith River group XLVII I 



Fort Union group L V 



Section of the Fort Union group LIX 



Tertiary rocks of the Wind River and White River groups LXI 



Wind River group .. LXI 



White River group LXI 



Section of the White River group LXIII 



INVERTEBRATE PALAEONTOLOGY 1 



Cretaceous species I 



Radiata 1 



Polypi 1 



Aetinaria 1 



Fungiidse 1 



Genus Micrabacia 1 



Alcvonaria ~ 



Gorgoniidte. - 2 



Genus Websteria ~ 



Microstizia 4 



Echiuodermata 5 



Ecbinoidea o 



Spatangidse ' •> 



Genus Hemiaster 5 



Moixusca 7 



Brachiopoda 7 



Lyopomata 7 



Lingnlidse 7 



Genua Lingula 7 



VII 



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