192 Bulletin Atnerican Museum of Natural History. [Vol. XIV, 



Plate xxvii, fig. 3. 



Bed. Section A-B. Thickness 



Plate xxvit, fig. i. 



Section C-D. Thickness. 



Plate xxvii, fig, 2. 



Section E-F. Thickness. 



Feet. 



No. 33 Yellowish sand- 

 stone 243 



" 32 Black sandstone 2 



" 31 Gray sandstone. 30 



Dakota. ^^^^ 

 Straw yellow 



sandstone 120 + 



Black sandstone. 3 



Yellow sandstone I2 



Feet. 

 Sandstone 200 + 



Black and red 

 sandstone 4 



Straw yellow sand- 

 stone 20 



Jurassic. 



30 Bluish green clay 21 



29 Green clay 20 



28a Flint \ 



28 Gray sandstone. 10 



27 Concretions .... 2 



26 Green clay 3 



25 Concretions .... li 



24^ Green clay 8 



24/^ 

 24c 



23 Green clay with 

 small concre- 

 tions 10 



22 Maroon clay with 

 small concre- 

 tions 10 



21 Sandstone 3 



20 Green clay 8 



19 Sandstone I 



18 Red clay 5 



17 Sandstone 2 



16 Green clay 6 



15 Sandstone I^ 



14 Red, green, ma- 

 roon clay 12 



13 Sandstone 2 



T2 Maroon, green, 



red clay 10 



II Sandstone 2 



10 Green clay 22 



9 Sandstone i 



8 Green clay 



7 Reddish clay. . . 



6 Sandstone 



5 Green sand shale 6 

 4 Purple clay with 



limestones. ... 22 



3 Nucula limestone i 



2 Brown clay 43 



Total of Jurassic 274I 



Bluish green clay. 



Green clay. 



Flint 



Green clay. . 

 Concretions 

 Green clay. 



20 

 40 



15 

 2 



9 



Green clay with 

 small concre- 

 tions 



Maroon clay with 

 small concre- 

 tions 



Green clay. 

 Sandstone. . 



Green clay 



Sandstone 



Green, maroon, 



red clay 



Sandstone 



Green clay 



Sandstone 



Green clay 



Sandstone 



20 Maroon clay. 

 20 

 \\ Sandstone 



28 



20 

 2 



9 

 2 



26 



20 



2 

 60 



20 



Purple clay with 

 limestones .... 



Brown clay with 

 limestone beds . 



7o 



37SI 



Maroon clay 10 



Bluish green clay. 15 



Yellow green clay 13 



Bluish green clay. 15 



Sandy clay 5 



Green clay 2 



Concretions i 



Green clay 15 



Sandstone 4 



Green clay 10 



Green clay with 

 small concre- 

 tions 25 



Maroon clay with 

 small concre- 

 tions 20 



Green clay g 



Red clay 5 



Maroon clay 7 



Red clay 8 



Gray sandstone. . 28 



Dark green clay. 10 



Sandstone i^ 



Redand green clay 10 



Sandstone 2 



Green clay 25 



Sandstone 12 



Purple clay with 



limestones .... 15 



Gray brown clay. 55 



332i 



I Triassic sandstones. 



Triassic sandstones. 



Triassic sandstones. 



