Helicosphaera omanica

Sato et al., 1991 Feb 22, 2021

Set number: 461

  • Helicosphaera neocrenulata VR 03540 1
  • Helicosphaera neocrenulata VR 03536 2
  • Helicosphaera neocrenulata VR 03539 3
  • Helicosphaera neocrenulata VR 03546 4
  • Helicosphaera neocrenulata VR 03541 5
  • Helicosphaera neocrenulata VR 03537 6
  • Helicosphaera neocrenulata VR 03538 7
  • Helicosphaera neocrenulata VR 03547 8
  • Helicosphaera neocrenulata VR 03542 9
  • Helicosphaera neocrenulata VR 03543 10
  • Helicosphaera neocrenulata VR 03544 11
  • Helicosphaera neocrenulata VR 03548 12
    10µm
Helicosphaera omanica, Late Pleistocene, DSDP Leg 23, Site 229A, Red Sea

Set number: 418

  • Helicosphaera neogranulata VR 04088 1
  • Helicosphaera neogranulata VR 04087 2
  • Helicosphaera neogranulata VR 04084 3
  • Helicosphaera neogranulata VR 04096 4
  • Helicosphaera neogranulata VR 04089 5
  • Helicosphaera neogranulata VR 04086 6
  • Helicosphaera neogranulata VR 04085 7
  • Helicosphaera neogranulata VR 04094 8
  • Helicosphaera neogranulata VR 04098 9
  • Helicosphaera neogranulata VR 04097 10
  • Helicosphaera neogranulata VR 04090 11
  • Helicosphaera neogranulata VR 04092 12
    10µm
Helicosphaera omanica, Late Pleistocene, DSDP Leg 23 Site 229A, Red Sea

Set number: 417

  • Helicosphaera neogranulata VR 03453 1
  • Helicosphaera neogranulata VR 03457 2
  • Helicosphaera neogranulata VR 03458 3
  • Helicosphaera neogranulata VR 03464 4
  • Helicosphaera neogranulata VR 03455 5
  • Helicosphaera neogranulata VR 03456 6
  • Helicosphaera neogranulata VR 03459 7
  • Helicosphaera neogranulata VR 03461 8
  • Helicosphaera neogranulata VR 03463 9
  • Helicosphaera neogranulata VR 03465 10
  • Helicosphaera neogranulata VR 03462 11
  • Helicosphaera neogranulata VR 03460 12
    10µm
Helicosphaera omanica, Late Pleistocene, DSDP Leg 23, Site 229A, Red Sea

Set number: 419

  • Helicosphaera princei neogranulata VR 03793 1
  • Helicosphaera princei neogranulata VR 03790 2
  • Helicosphaera princei neogranulata VR 03794 3
  • Helicosphaera princei neogranulata VR 03802 4
  • Helicosphaera princei neogranulata VR 03792 5
  • Helicosphaera princei neogranulata VR 03791 6
  • Helicosphaera princei neogranulata VR 03795 7
  • Helicosphaera princei neogranulata VR 03796 8
  • Helicosphaera princei neogranulata VR 03801 9
  • Helicosphaera princei neogranulata VR 03800 10
  • Helicosphaera princei neogranulata VR 03797 11
  • Helicosphaera princei neogranulata VR 03799 12
    10µm
Helicosphaera omanica, Late Pleistocene, DSDP Leg 23 Site 229A, Red Sea

together with Helicosphaera princei

Final Epithet
Helicosphaera omanica Sato et al., 1991
Basionym

Helicosphaera omanica Sato et al., 1991

Description

Helicolith has a Type III (Helicosphaera carteri type) blanket, an expanded flange termination and a wide elongated central opening which is wider at one end.

Remarks

Helicosphaera omanica differs from any other species of Helicosphaera by having a large slit-like opening that widens at one end.

References

Gartner, S., 1977. Calcareous nannofossil biostratigraphy and revised zonation of the Pleistocene. Marine Micropaleontology 2, 1-25.

Haq, B. U., Berggren, W. A., 1978. Late Neogene calcareous plankton biochronology of the Rio Grande Rise (South Atlantic Ocean). Journal of Paleontology 52, 1167-1194.

Sato, T., Kameo, K., Takayama, T., 1991. Coccolith biostratigraphy of the Arabian Sea. Proceedings of the Ocean Drilling Program, Scientific Results 117, 37-54.

Taxonomy
Helicosphaera
Biostratigraphy
  • Phanerozoic
    • Cenozoic
      • Quaternary
        • Pleistocene
          • Late Pleistocene
            • Tarantian
          • Middle Pleistocene
            • Chibanian
Stratigraphic Range
Chibanian - Tarantian
Age (Ma)
0.29 - 0.21
Holotype
Helicosphaera neogranulata VR 03453 Helicosphaera neogranulata VR 03453

Helicosphaera omanica Sato et al., 1991

ODP Leg 117, Site 721A, Core-4H, Section 3 115-117cm