316 



PLATE III 



Anolotichia explanata n. sp . 



1. Longitudinal section x 20, showing superposed layers. 



2, 3, and 4. Tangential sections x 20. 



Pierce and Ridley limestones, Murfreesboro and Sulphur Springs, 

 Rutherford Co., Tenn. 



Trigonidictya irregularis, n. sp. 



" 5. Cross-section x 18, showing the three divisions of the laminae. 

 6. Longitudinal section x 18. 



Lebanon Limestone, Christiana, Tenn. 

 (See Plate XIII) 



