EXPLANATION OF PLATE LXII. 



Figs. 1-12. BRACHYTHYRIS SUBORBICULARIS (Hall) p. 374 



1-5. Pedicle, brachial, posterior, anterior and lateral views of a 

 nearly complete example. (W. M., No. 4721.) 



Burlington limestone, near Sulphur Springs, Missouri. 

 6-10. Pedicle, brachial, lateral, posterior and anterior views of a 

 nearly perfect internal cast. (W. M., No. 5652.) 

 Residual chert, Springfield, Missouri. 



11. View of a pedicle valve. (W. M., No. 13324.) 



Crawfordsville beds, Crawfordsville, Indiana. 



12. View of a small pedicle valve. (W. M., No. 13325.) 



Crawfordsz'ille beds, Offield Creek, near Crawfordst'ille, 

 Indiana. 



140 



