|Buccinosphaera invaginata Zone||Reference Slide R 1|
|85-573-1-1, 8-10 cm||R1.1||R1.2||R1.3|
Specimens are located using England Finder coordinates; radiolarian slide label positioned to the left.
Radiolarians are common and well preserved in this sample. Diatoms and sponge spicules are numerous and there is some reworking.