54 



Geological Survey of Alabama. 



A small layer twenty-five feet above the Wood's Bluff beds was found 

 to contain the following species : 



Cytherea perovata? Con. 

 Corbula Aldrichi, Mr. 

 Laevibuccinum lineatum, Heilpr. 



Rostellaria trinodifera, Con. 

 Leda, n. sp. (same as W. B.). 

 Nassa cancellata, Lea. 



TABLE VI. 



BELL'S LANDING GROUP. 



This group includes a large marl-bed at Bell's Landing, Ala., also a 

 smaller bed called "Gregg's Landing Marl," which is found at the base 

 of the bluff at Bell's Landing and in the Gregg's Landing localities. 

 Several bluffs occur where both are exposed in one profile on the Ala- 

 bama River, notably "Lower Peach-Tree Landing ;" the Bell's Landing 

 bed occurs on the Tombigbee River, and at Tuscahorna Landing, Ala. 

 The tables give the following localities: "Bell's Landing bed," or "Bell's 

 Upper;" " Bell's Lower," equal to "Gregg's Landing Marl;" "Gregg's 

 Landing Marl," equal to "Gregg's;" "Lower Peach-Tree, " equal to 

 "Bell's" and "Gregg's," together, and "Tuscahoma," equal to " -Bell's 

 Landing bed." 



The locality at Bell's Landing seems to have been favorable to the 

 growth of large specimens. To give an idea of this, the dimensions at- 



