Atrypae of the Central Missouri Devonian 41 
PLAT? 2. 
nner ila, (8 MPA aie 
Figs. 1—16. Atrypa missouriensis Miller. 
L -16 Pedicle views of a series of this species from the Spirifer 
annae zone of the Callaway Limestone. Near Bellama Springs, 
Callaway Co., Mo. 
