IV. DISTRIBUTION 



AMERICAN FAUNAL LISTS 



The faunas included in the primarily zoological and morphological treatment on the 

 preceding pages are here separated into formal lists for each horizon and locality. 

 Names considered very doubtful or positively invalid are omitted and all are used in 

 the same sense as in the morphological section. Thus the fauna of the Lance is actually 

 richer and more varied than its faunal list would seem to indicate. 



JURASSIC 



Morrison Formation, Como Bluff, Wyoming. (Quarry 9.) 



MULTITUBERCULATA: 



Ctenacodon serratus 



C. scitidens 



C. laticefs 



Psalodon fotens 



P. fortis 



?P. mar ski 

 TRICONODONTA: 



Phascolodon gidleyi 



A-ploconodon cotnoensis 



Trioracodon bisulcus 



Priacodon ferox 



P. robustus 



P. lulli 



P. grandaevus 

 SYMMETRODONTA: 



Tinodon belLus 



T . lefidus 



Amfhidon suferstes 



Eurylanibda aequicrurius 



PANTOTHERIA: 

 Paurodon vcdens 

 Archaeotrigon brevimaxillus 

 A. distagmus 

 Tathiodon agilis 

 Dryolestes friscus 



