324 
PLATE VII 
Heterotrypa stonensis n. sp. 
1. Longitudinal section x 18. 
2. Tangential section x 18. 
Pierce limestone. Stokes Gannon Ford, 2 
freesboro, Tenn. 
miles northwest of Mur- 
Constellaria lamelosa n. sp. 
3 and 4. Tangential sections x 20. 
5. Longitudinal section x 20. 
Pierce limestone. Murfreesboro, Tenn.; Lascassas, Tenn. 
Nicholsonella frondifera n. sp. 
x 20. 
6. Longitudinal section 
7. Tangential section x 20. 
Pierce, Ridley and Lebanon limestone. Murfreesboro, Atmanvyille, 
Marshall Knob, Salem, Rutherford Co., Tenn. 
