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PLATE VIII 
Hallopora spissata n. sp. 
1. Longitudinal section x 20. 
2. Tangential section x 20. 
Pierce limestone. Murfreesboro, Ward's Mill, Almaville, Tenn. 
Hallopora florencia n. sp. 
3. Longitudinal section x 18. 
4. Tangential section x 18. ~ 
Pierce limestone. Florence, Tenn. 
Batostoma libana (Safford). 
5. Portion of zoarium, natural size. 
6. Longitudinal section x 20. 
7. Tangential section x 20. 
Lebanon limestone, of Central Tennessee. 
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