Type
Zone
Age range
48.5–47.5 Ma
Eocene
Lutetian
Ypresian
Thyrsocyrtis triacantha
Dictyoprora mongolfieri
Theocotyle cryptocephala
48.548.548.448.448.348.348.248.148.148.048.048.047.947.947.847.847.747.647.647.547.5