PIE Ady lela 
Figs. 1, 2, 4. Prioniodus colligatus, Bryant. 
Figs. 3, 5. Centrodus invalidus, Bryant. 
Fig. 6. Prioniodus obtusus, Bryant. 
Fig. 7. Prioniodus abbreviatus, Hinde. Thin section showing 
dimensions of basal cavity. 
Fig. 8. Conodont fractured so as to exhibit internal pigmentation 
of denticles. 
Fig. 9. Prioniodus cristatus, Bryant. 
Fig. 10. Prioniodus alatus, Hinde. 
Originals from the Conodont bed (Genesee) in Eighteen Mile Creek, 
Erie County. NiYo Bigs#223.. 5, 6. 7. 7@30) All sothencgaxciZor 
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