REPORT OF THE STATE PALEONTOLOGIST 1901 545 



Such zones as can be distinguished are arranged in the fol- 

 lowing sequence, " a " being the lowest. 



a Climactichnites wilsoni Logan; lowest zone in 

 midst of middle portion of sandstone. 



bHvolithes primordialis (?), Lingulella acu- 

 minata Conrad, Obolella prima Conrad, 

 b Scolithns linearis Hall ; at Kent Falls only, 

 c Lingulepis minima Whitfield, Lingulella acu- 

 minata Conrad, Obolella prima Conrad, P t y - 

 choparia minuta Whitfield, Conocephalites 

 verrucosus Whitfield, 

 d Lingulella, Obolella, Conocephalites verrucosus, 

 Ptychoparia small, trilobite with broad cheek, O p h i 1 e t a 

 compacta Salter (?), Platyceras, Scolithus can- 

 adensis Billings, 

 e Scolithus canadensis in abundance on the upper 

 surfaces of sandstone layers of the transition beds in the 

 uppermost portion of the formation. These uppermost 

 layers have up to the present yielded no other fossils than 

 this worm burrow. 

 6 No answer can at present be given to this question. Some 

 suggestive evidence has been derived from the pebbles included 

 in the layers of sandstone at various horizons in the forma- 

 tion. It is, however, of such disconnected character and 

 meager amount as to warrant its exclusion from the present 

 discussion. 



