Pontosphaera jonesii

(Boudreaux & Hay, 1969) Backman, 1980 Jan 15, 2022

Set number: 1908

  • Pontosphaera jonesii VR 07568 1
  • Pontosphaera jonesii VR 07565 2
  • Pontosphaera jonesii VR 07569 3
  • Pontosphaera jonesii VR 07574 4
  • Pontosphaera jonesii VR 07567 5
  • Pontosphaera jonesii VR 07566 6
  • Pontosphaera jonesii VR 07570 7
  • Pontosphaera jonesii VR 07575 8
  • Pontosphaera jonesii VR 07573 9
  • Pontosphaera jonesii VR 07572 10
  • Pontosphaera jonesii VR 07571 11
  • Pontosphaera jonesii VR 07576 12
    10µm
DSDP Leg 23, Site 225, Red Sea

Set number: 1232

  • Pontosphaera jonesii VR 04516 1
  • Pontosphaera jonesii VR 04520 2
  • Pontosphaera jonesii VR 04521 3
  • Pontosphaera jonesii VR 04525 4
  • Pontosphaera jonesii VR 04515 5
  • Pontosphaera jonesii VR 04519 6
  • Pontosphaera jonesii VR 04522 7
  • Pontosphaera jonesii VR 04524 8
  • Pontosphaera jonesii VR 04523 9
  • Pontosphaera jonesii VR 04527 10
  • Pontosphaera jonesii VR 04529 11
  • Pontosphaera jonesii VR 04526 12
    10µm
DSDP Leg 23, Site 229A, Red Sea
Final Epithet
Pontosphaera jonesii (Boudreaux & Hay, 1969) Backman, 1980
Basionym

Crassapontosphaera jonesi Boudreaux & Hay, 1969

Remarks

Large non-porous Pontosphaera species features a moderately high wall and a distal cover of equal height over the proximal plate. Several nearly radial sutures extend from a deep longitudinal suture on the proximal plate. Pontosphaera jonesii exhibits first-order yellow to brown interference colours, laevogyre-inclined extinction lines with a typical extinction angle of approximately 55° on the distal side, and length-fast (−) elongation.

References

Backman, J. 1980. Miocene-Pliocene nannofossils and sedimentation rates in the Hatton-Rockall Basin, NE Atlantic Ocean. Stockholm Contributions in Geology 36: 1-91.

Boudreaux, J. E. & Hay, W. W. 1969. Calcareous nannoplankton and biostratigraphy of the late Pliocene-Pleistocene-Recent sediments in the Submarex cores. Revista Española de Micropaleontología 1(3): 249-292.

Taxonomy
Pontosphaera
Biostratigraphy
  • Phanerozoic
    • Cenozoic
      • Quaternary
        • Pleistocene
          • Late Pleistocene
            • Tarantian
      • Neogene
        • Miocene
          • Late Miocene
            • Messinian
Stratigraphic Range
Messinian - Tarantian
Age (Ma)
7.25? - 0.00
Zone(s)
NN12 - NN21
Holotype
Pontosphaera jonesii VR 04520

Crassapontosphaera jonesi Boudreaux & Hay, 1969

Late Pliocene

Submarex Core E3, Atlantic Ocean