1. Malta, Middle Miocene, 6.9µm
2. Malta, Middle Miocene, 4.8µm
Reticulofenestra ampliumbilicus Theodoridis, 1984
Theodoridis, S., (1984): Calcareous nannofossil biostratigraphy of the Miocene and revision of the helicoliths and discoasters. - Utrecht Micropaleontological Bulletin. 32: 1-271.
Reticulofenestra ampliumbilicus
Theodoridis, 1984
Middle Miocene
Scicli, Sicily