EXPLA.NATION OF PLATE XII. 



Page 



Fig. 1 . Fusulina cylindrica 102 



la. Small fragmeat of limestone with shells embedded. 



lb. Single case (enlarged) . 



Ic. Transverse section (enlarged) . 



Carboniferous, Upper Coal Measures . 



Fig . 2 Receptaculites oweni 103 



2a. Surface of specimen showing rhombic cell openings. 

 2b. Section of interior. (Mas. Mo. Geol. Sur.) 

 Silurian, Trenton limestone. 



Fig 3. Stromatopora expansa 104 



Devonian, Hamilton limestone. (Mus. Mo. Geol. Sur.) 



Fig . 4 Cyathophyllum cornicula 105 



Devonian limestone. (Mus. Mo. Geol. Sur.) 



Fig . 5 Axophyllum, rude 107 



5a. Side view of a typical specimen. (Hare collection.) 

 5b. Aspect of same from above. 



Carboniferous, Upper Coal Measures. 



Fig. 6. Cyathophyllum glabrun 105 



6a. Lateral aspect of type specimen. (Mus. Mo. Geol. Sur.) 

 6b, Transverse section of same. 



Carboniferous, Chouteau (Upper Kinderhook) limestone. 



Fig 7. Campophyllum torquium 107 



7a. An average example. (After Meek) 



To Cross-section of same. 



7«. Longitudinal section of same. 



Carboniferous, Upper Coal Measures. 



Fig 8 Lithoslrotion mammillare 106 



Partof large specimen. (Mus. Mo. Geol. Sur.) 

 Carboniferous, Saint Louis limestone. 



