PALEONTOLOGY 



FIG. 23. LAMELLIBRANCHS. 



, Leda (Dacryomya] lacryma (I. de C. Sowerby), Inferior Oolite. Right side. 

 ( X 3-) (After Goldfuss.) b, Actinodonta cuneata Phillips, Ordovician.' 

 Interior of left valve. Teeth white, sockets black, (x^.) (After 

 Phillips.) c, Carbonicola robusta (J. de C. Sowerby). Coal Measures 

 Upper Carboniferous. Right side. (x.) (After Hind.) d, Cardinia 

 hsteri (J. Sowerby). Right side. (x.) d', C. ovalis (Stutchbury) 

 internal cast, (xj.) (After Quenstedt. ) e t Astarte bore Us (Chemnitz), 



