41 6 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



EXPLANATION OF PLATE XLIL 



Lower Trias, Meekoceras beds, Wood Canyon, nine miles east of Soda 

 Springs, Aspen Mountains, Idaho. 



Page 



Figs. 1-4. Meekoceras gracilitatis White 370 



Fig. 5. Flemingites russelli Hyatt & Smith, ms 378 



