324 



PLATE VII 



Ileterotrypa stonensis n. sp . 



1. Longitudinal section x 18. 



2. Tangential section x 18. 



Pierce limestone. Stokes Gannon Fortl, 2 miles northwest of Mur- 

 freesboro, Tenn. 



Constellaria lamelosa n. sp. 



3 and 4. Tangential sections x 20. 

 5. Longitudinal sect-on x 20. 



Pierce limestone. Murfreesboro. Tenn.; I.,ascassas. Tenn. 



Nicholsonella frondifera n. sp. 



0. Long;itiuliiial section x 20. 

 7. Taiificiitial section x 20. 



Pierce. KicllcN and Lebanon limestone. Murfreesboro, Atmanville, 

 :Marsluill Knob, Salem, Rutherford Co., Tenn. 



