Early Miocene (3)
Discoaster (12)
Sphenolithus (20)
Helicosphaera (14)
Micrantholithus pinguis Bramlette & Sullivan, 1961
Description: Medium sized Micrantholithus with deeply indented sides and elevated structure.
Remarks:
Neogene: Micrantholithus
Paleogene: Micrantholithus pinguis