Type
Sub-age
Age range
53.416–53.374 Ma
C24n.2n
C24n.2r
C24n.3n
53.41653.41453.41253.41053.40853.40653.40453.40253.40053.39853.39653.39453.39253.39053.38853.38653.38453.38253.38053.37853.37653.374