PLATE 80. 



Ctathophyllum torxatum, Nov. Spec. Devonian. 



1. Exterior apertural view of a corallum from the superior stratum 



of the encrinal limestone dark-red clay, near Louisville. 



Cyathophyllum JUVENE, Devonian. 



2. Right lateral view of a young corallum. 



6. View of the gemmiferous calyx of a corallum. 



7. Apertural view of a corallum of more than average altitude. 



8. Explanate calyx of a corallum of medium size. 



From the horizon and vicinage of examples figured in Plate 79. 



Ctathophyllum ethelaxum, Nov. Spec. Devonian. 



3. Lateral and apertural-gap view of corallum of slender, tortuous 



growth. 

 5. Oblique anterior view of a corallum of medium size. 



Found from three to four feet below the shale which caps the 

 Upper Devonian, near Louisville. 



Ctathophyllum trauthaxum, Nov. Spec. Devonian. 



4. Right lateral view of a corallum of average size. 

 Associated with C. ethelanum. 



Cystiphyllum cuyagaexse. Devonian. 



9. Right lateral view of corallum with flattened apex. 



10. View of the calyx of a corallum. 



Both examples from the Middle Devonian red clay, near Louisville. 



Choxophyllum nanum, Nov. Spec. Devonian. 



11. Left lateral view of a corallum of average size. 



12. Similar view of a corallum of unsymmetrical growth above medium 



size. 



13. View of the calyx of a small corallum. 



From the dark-red clay of the Upper Devonian encrinal limestone, 

 near Louisville 



