Paleogene (9)
Coccolithales (2)
Coccoliths ord inc sed (2)
Discoasterales (4)
Holococcoliths (1)
Isochrysidales (2)
Mesozoic Survivors (4)
Nannoliths ord inc sed (5)
Syracosphaerales (3)
Zygodiscales (3)
Neogene (8)
Calcidiscaceae (5)
Coccolithaceae (6)
H perch-n NN2 1259A-8-6145. Scale markings at 5 micron spacing
Neogene: Helicosphaera perch-nielseniae
Image Galleries: Zygodiscales - Helicosphaeraceae