Plate 3. Scale bar for figs. 1-13 = 100 µm. Codes after sample description are slide description and England Finder coordinates, respectively. Distinctive external morphologies or features allow for identification of taxa despite various preservation problems. 10. Opaline fragment of delicate radiolarian. Sample 165-1001A-27R-3, 86-88 cm, ph.1 R8/2.