Figs. 59-63. SPIRIFERELLA (?) SCHUCHERTI (Rowley) p. 416 



Pedicle, brachial, lateral, posterior and anterior views of a very 

 perfect specimen. Metatype. (R. R. R.) 



Burlington white chert, Louisiana, Missouri. 



Figs. 64-72. ACANTHOSPIRA ACICULIFERA (Rowley) p. 413 



64-67. Pedicle, brachial, lateral and anterior views of the holotype. 

 68-71. Pedicle, brachial, lateral, posterior and anterior views 

 of the same specimen enlarged (x 4). (R. R. R.) 

 Louisiana limestone, Louisiana, Missouri. 



84 



