Reticulofenestra primitiva

Gheta, 1982 Jul 15, 2021

Set number: 1685

  • Reticulofenestra primitiva VR 02488 1
  • Reticulofenestra primitiva VR 02489 2
  • Reticulofenestra primitiva VR 02492 3
  • Reticulofenestra primitiva VR 02499 4
  • Reticulofenestra primitiva VR 02487 5
  • Reticulofenestra primitiva VR 02490 6
  • Reticulofenestra primitiva VR 02493 7
  • Reticulofenestra primitiva VR 02498 8
  • Reticulofenestra primitiva VR 02496 9
  • Reticulofenestra primitiva VR 02495 10
  • Reticulofenestra primitiva VR 02494 11
  • Reticulofenestra primitiva VR 02497 12
    10µm
DSDP Leg 39, Sites 356, Sào Paulo Plateau, South Atlantic Ocean

Set number: 1684

  • Reticulofenestra primitiva VR 02516 1
  • Reticulofenestra primitiva VR 02520 2
  • Reticulofenestra primitiva VR 02521 3
  • Reticulofenestra primitiva VR 02532 4
  • Reticulofenestra primitiva VR 02518 5
  • Reticulofenestra primitiva VR 02519 6
  • Reticulofenestra primitiva VR 02523 7
  • Reticulofenestra primitiva VR 02531 8
  • Reticulofenestra primitiva VR 02528 9
  • Reticulofenestra primitiva VR 02527 10
  • Reticulofenestra primitiva VR 02525 11
  • Reticulofenestra primitiva VR 02530 12
    10µm
DSDP Leg 39, Sites 356, Sào Paulo Plateau, South Atlantic Ocean

Set number: 1680

  • Reticulofenestra primitiva VR 024800 1
  • Reticulofenestra primitiva VR 024797 2
  • Reticulofenestra primitiva VR 024803 3
  • Reticulofenestra primitiva VR 024809 4
  • Reticulofenestra primitiva VR 024799 5
  • Reticulofenestra primitiva VR 024798 6
  • Reticulofenestra primitiva VR 024802 7
  • Reticulofenestra primitiva VR 024808 8
  • Reticulofenestra primitiva VR 024806 9
  • Reticulofenestra primitiva VR 024805 10
  • Reticulofenestra primitiva VR 024804 11
  • Reticulofenestra primitiva VR 024807 12
    10µm
DSDP Leg 39, Sites 356, Sào Paulo Plateau, South Atlantic Ocean

Set number: 1683

  • Reticulofenestra primitiva VR 02596 1
  • Reticulofenestra primitiva VR 02592 2
  • Reticulofenestra primitiva VR 02595 3
  • Reticulofenestra primitiva VR 02602 4
  • Reticulofenestra primitiva VR 02597 5
  • Reticulofenestra primitiva VR 02593 6
  • Reticulofenestra primitiva VR 02594 7
  • Reticulofenestra primitiva VR 02603 8
  • Reticulofenestra primitiva VR 02598 9
  • Reticulofenestra primitiva VR 02600 10
  • Reticulofenestra primitiva VR 02601 11
  • Reticulofenestra primitiva VR 02604 12
    10µm
DSDP Leg 39, Sites 356, Sào Paulo Plateau, South Atlantic Ocean

Set number: 1682

  • Reticulofenestra primitiva VR 02770 1
  • Reticulofenestra primitiva VR 02766 2
  • Reticulofenestra primitiva VR 02769 3
  • Reticulofenestra primitiva VR 02775 4
  • Reticulofenestra primitiva VR 02771 5
  • Reticulofenestra primitiva VR 02767 6
  • Reticulofenestra primitiva VR 02768 7
  • Reticulofenestra primitiva VR 02776 8
  • Reticulofenestra primitiva VR 02772 9
  • Reticulofenestra primitiva VR 02773 10
  • Reticulofenestra primitiva VR 02774 11
  • Reticulofenestra primitiva VR 02777 12
    10µm
DSDP Leg 39, Sites 356, Sào Paulo Plateau, South Atlantic Ocean

Set number: 1681

  • Reticulofenestra primitiva VR 03031 1
  • Reticulofenestra primitiva VR 03034 2
  • Reticulofenestra primitiva VR 03037 3
  • Reticulofenestra primitiva VR 03043 4
  • Reticulofenestra primitiva VR 03032 5
  • Reticulofenestra primitiva VR 03033 6
  • Reticulofenestra primitiva VR 03036 7
  • Reticulofenestra primitiva VR 03042 8
  • Reticulofenestra primitiva VR 03041 9
  • Reticulofenestra primitiva VR 03039 10
  • Reticulofenestra primitiva VR 03040 11
  • Reticulofenestra primitiva VR 03038 12
    10µm
DSDP Leg 39, Sites 356, Sào Paulo Plateau, South Atlantic Ocean

Set number: 1103

  • R primitiva 1
    5µm
Reticulofenestra primitiva
Final Epithet
Reticulofenestra primitiva Gheta, 1982
Basionym

Reticulofenestra primitiva Gheta, 1982

Synonyms

Reticulofenestra circus de Kaenel & Villa, 1996 [Holotype: 8.2µm, Early Oligocene]

Reticulofenestra wadeae Bown, 2005d [Holotype: 9.1µm, Middle Eocene]

Dimensions Of Holotype

Length: 8.6µm

Remarks

Reticulofenestra primitiva is a large (8.0-12 μm), subcircular species characterised by a larger distal shield than the proximal shield and a void central area distinctly narrower than the width of the pelaga. Its optical properties, including inclined dextrogyre extinction lines (with angles typically around 9° on the distal shield and 77° on the tube cycles on the distal side) and length-fast (-) elongation, are consistent with those of the genus Reticulofenestra. Synonyms recognized due to their shared characteristics include Reticulofenestra circus and Reticulofenestra wadeae, with holotypes measuring 8.2 μm and 9.1 μm, respectively. The holotype of Reticulofenestra primitiva measures 8.6 μm.

References

Bown, P. R. 2005d. Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research 27(1): 21-95.

de Kaenel, E. & Villa, G. 1996. Oligocene-Miocene calcareous nannofossil biostratigraphy and paleoeecology from the Iberian Abyssal Plain. Proceedings of the Ocean Drilling Program, Scientific Results 149: 79-145.

Gheta, N. 1982. The Eocene of NW Transylvania. A new biochronostratigraphic zonation based on calcareous nannoplankton. Dari de Seama ale Sedintelor Institutul de Geologie si Geofizica 69: 95-106.

Taxonomy
Reticulofenestra
Biostratigraphy
  • Phanerozoic
    • Cenozoic
      • Paleogene
        • Oligocene
          • Middle Oligocene
            • Rupelian
        • Eocene
          • Middle Eocene
            • Lutetian
Stratigraphic Range
Lutetian - Rupelian
Age (Ma)
48.07? - 29.80?
Zone(s)
NP15 - NP23
Holotype
Reticulofenestra primitiva VR 03031 Reticulofenestra primitiva VR 03031

Reticulofenestra primitiva Gheta, 1982

Middle Eocene - Late Eocene

Transylvania Basin, Romania