Pontosphaera geminipora

Bartol, 2010 Jun 13, 2025

Set number: 1913

  • Pontosphaera geminiporus1 1177 2 1
  • Pontosphaera geminiporus 1 943 11 2
  • Pontosphaera geminiporus 1 943 10 3
  • Pontosphaera geminiporus 1 938 24 4
Malta

Fig 1. 8.3 µm; Fig 2. 7.2 µm; Fig 3. 6.7 µm; Fig 4. 8.4 µm
Final Epithet
Pontosphaera geminipora Bartol, 2010
Basionym

Pontosphaera geminipora Bartol, 2010

Remarks

A Pontosphaera species is characterised by paired elongated pores arranged in two to three complete concentric cycles, with additional randomly distributed pores in the centre. Pontosphaera geminipora exhibits uniform interference colours in the plan view in XPL due to the comparable height of the wall and the distal cover over the proximal plate.

References

Bartol, M. 2010. Pontosphaera geminipora n. sp. and Pontosphaera desuetoidea n. sp., new calcareous nannoplankton species from the Middle Miocene of the Mura Depression (Slovenia, Central Paratethys). Micropaleontology. 56(6): 509-515

Taxonomy
Pontosphaera
Biostratigraphy
  • Phanerozoic
    • Cenozoic
      • Neogene
        • Miocene
          • Middle Miocene
            • Serravalian
            • Langhian
Stratigraphic Range
Langhian - Serravalian
Age (Ma)
15.99? - 11.63?
Zone(s)
NN5 - NN6
Holotype
Pontosphaera geminiporus1 1177 2

Pontosphaera geminipora Bartol, 2010

Middle Miocene

Lenart Section