324: It. S. Lull — Mammals and Horned Dinosaurs. 



Cimolomys nitidus (Marsh) 

 " parvus (Marsh) 



" (Halodon) serratus (Marsh) 



Meniscoessus (Selanacodon) brevis (Marsh) 

 " (Tripriodori) caperatus (Marsh) 



" " cozlatus (Marsh) 



" conquistus Cope 



" {Selenacodori) fragilis (Marsh) 



" (Dipriodon) lunatus (Marsh) 



" " robustus (Marsh) 



" {Halodon) sculptus (Marsh) 



Oracodon aneeps Marsh 

 " conulus Marsh 



Camptomus amplus Marsh 



On comparison with older faunae, no genera in common 

 between the Lance and the Triassic, Jurassic or Comanchian 

 (Morrison) are found, with the doubtful exception of Dryo- 

 lestes, of which there are several species in the latter beds and 

 but one in the former ; as the Lance species, however, is based 

 upon an imperfect jaw without teeth, its inclusion in the genus 

 is open to question. 



Comparison with the Belly River fauna. — Of the few forms 

 reported from the Belly River, one is referred to the genus 

 Ptilodus {P. primoevus Lambe). Of this species Hatcher says 

 it is related to but somewhat more primitive than Meniscoessus 

 conquistus Cope from the Laramie of South Dakota. The 

 only other species which I find recorded is Boreodon- 

 malutinus Lambe, related, according to Hatcher, to Stagodon. 



Comparison with the Paskapoo fauna. — Barnum Brown 

 (1914A, p. 361) thus speaks of the mammals from the Paskapoo 

 formation of Alberta : 



" Near Erickson's Landing, about 20 miles below the town of 

 Red Deer, there is an enormous slide, the largest seen along the 

 [Red Deer] river, where a full section of the canyon wall 100 

 yards in length has slipped down to the river level. In this fallen 

 material there are many blocks of sandstone carrying on the 

 lower side clay pebbles, Unios, and a few jaws, teeth, and bones 

 of mammals, identified as follows : 



" Muxtitubekculata : Tritubercu lata : 



Meniscoessus sp. indesc. Didelphops sp. ) 



Ptilodus sp. ? Batodon sp. > ? Marsupiala 



Cimolodon sp. ? Thloeodon sp. ) 



? Gen. indesc. 



? Gen. indesc. \ ? Insectivora 



Pantolestidse gen. indet. 



? Creodonta 



?Taligrada" 



