Genus Roundya 26 



Roundya costata Rexroad, n. sp 26 



Genus Trichonodella 26 



Trichonodella imperfecta Rexroad 26 



Genus Indeterminate . 26 



References 27 



ILLUSTRATIONS 



Text Figures Page 



1. Localities from which conodonts were collected . 8 



2. Reily Lake North, locality 1 8 



3. Coles Mill, locality 2 9 



4. Grassy Knob, locality 3 9 



5. Vienna South, locality 4 11 



6. Harris Creek, locality 5 .- 11 



7. Walches Cut, locality 6 12 



8. Gary Brothers Quarry, locality 8 13 



9. Brownsville Southeast, locality 9 13 



10. Type Glen Dean, locality 10 14 



11. Lutgring and Sons Quarry, locality 11 14 



12. Mulzer Brothers Quarry, locality 12 15 



13. Gerkin Quarry, locality 13 16 



14. Diagrammatic reconstruction of a mature representative oi Lambdagnathus Rexroad, 



n. gen 20 



Plates Facing Page 



1. Glen Dean conodonts 12 



2. Glen Dean conodonts 13 



3. Glen Dean conodonts 14 



4. Glen Dean conodonts 15 



5. Glen Dean conodonts 16 



6. Glen Dean conodonts. . 17 



