592 



University of Kansas Geological Survey. 



Martin, H. T 32 



Meek and Hayden, report by 17 



Meretrix tenuis 458 



Microscopic organisms : 



method of study of 417 



of the Upper Cretaceous 413 



McClung, O. E 12, 413 



Mollusca 439, 445, 485 



Mortoniceras 



shoshonense 471 



vermilionense 472 



Mosasaurinse 195 



Mosasaurida;, distribution of.. 89, 91 



Mosasauria 170 



Mosasaurs 83, 85, 195 



atlas 136 



axis 136 



basioccipital 119 



basisphenoid 118 



carpus 153 



caudal vertebra. 141 



cervical vertebra^ 138 



comparative anatomical de- 

 scriptions of 100 



coracoid 145 



coronoid 132 



dentary 133 



dorsal vertebra? 139 



ectopterygoid 124 



extremities 159 



femur 163 



fibula 164 



frontal 109 



giganteus 85 



history of 83 



hoffmani 85 



humerus 147 



ilium 160 



ischium 162 



restoration of 209 



jugal 112 



lachrymal 109 



length of different regions of. . 143 



mandible 130 



maxillae 106 



metacarpals 156 



metatarsals 166 



Mosasaurs: 



number of vertebra? of 143 



parietal 116 



paroccipital 120 



pelvic girdle 159 



petrosal 122 



phalanges 159, 168 



postfronto-orbitals Ill 



prefrontals 107 



premaxillo-nasals 102 



presplenial 133 



proportional length of different 



body regions 142 



prosquamosal 124 



pterygoid 114 



pubis 161 



pygal vertebra; 141 



quadrate 125 



quadratojugal 124 



radius 150 



range and distribution of 87 



scapula 144 



splenial 132 



squamosal 120, 123 



supraoccipital 118 



systematic descriptions of 169 



systematic position of 93 



tarsus 165 



tibia 164 



transverse 85 



ulna 152 



vertebra; 135 



vomer 104 



Mytulites problernaticus 450 



Mudge, B. F 18, 19, 21, 28, 50 



N. 



Nectoportheus 171 



Niobrara : 



fauna 480 



invertebrates, outline of 481 



species, description of 481 



O. 



Orbulina universa . .• 422 



Ostracites labiatus 450 



Ostrea 



anceps 446 



belliplicata 445 



