Conodont P4J41

Collected: Site P, Liepers Shale from Upper Ordovician in Nashville, Tennessee, USA.
Estimated Age: about 450 million years old.
Dimensions: scale bar is .5 mm
Comments: Image 01 taken with overhead twin lateral illumination before element was boiled. Other images taken as oil immersion darkfield. Notice the early growth cones near the cusp, and slightly denticulated flange next to cusp.