Helicosphaera wallichii

(Lohmann, 1902) Okada & McIntyre, 1977 Feb 24, 2021

Set number: 448

  • Helicosphaera wallichii 1155 16 1
Helicosphaera wallichii, Early Pliocene, Adana Basin, Turkey

Set number: 433

  • Helicosphaera wallichii S12 1 1
  • Helicosphaera wallichii S10 4 1 2
Helicosphaera wallichii, Recent, Jason Bay, The South China Sea

Set number: 1248

  • Helicosphaera wallichii VR 04834 1
  • Helicosphaera wallichii VR 04831 2
  • Helicosphaera wallichii VR 04828 3
  • Helicosphaera wallichii VR 04839 4
  • Helicosphaera wallichii VR 04833 5
  • Helicosphaera wallichii VR 04832 6
  • Helicosphaera wallichii VR 04829 7
  • Helicosphaera wallichii VR 04837 8
  • Helicosphaera wallichii VR 04841 9
  • Helicosphaera wallichii VR 04840 10
  • Helicosphaera wallichii VR 04835 11
  • Helicosphaera wallichii VR 04836 12
    10µm
Helicosphaera wallichii, Late Pleistocene, DSDP Leg 23 Site 229A, Red Sea

Set number: 1249

  • Helicosphaera wallichii VR 05169 1
  • Helicosphaera wallichii VR 05166 2
  • Helicosphaera wallichii VR 05170 3
  • Helicosphaera wallichii VR 05178 4
  • Helicosphaera wallichii VR 05168 5
  • Helicosphaera wallichii VR 05167 6
  • Helicosphaera wallichii VR 05172 7
  • Helicosphaera wallichii VR 05175 8
  • Helicosphaera wallichii VR 05179 9
  • Helicosphaera wallichii VR 05180 10
  • Helicosphaera wallichii VR 05174 11
  • Helicosphaera wallichii VR 05173 12
    10µm
Helicosphaera wallichii, Middle Pleistocene, DSDP Leg 23 Site 229A, Red Sea

Set number: 1250

  • Helicosphaera wallichii VR 05356 1
  • Helicosphaera wallichii VR 05352 2
  • Helicosphaera wallichii VR 05353 3
  • Helicosphaera wallichii VR 05363 4
  • Helicosphaera wallichii VR 05355 5
  • Helicosphaera wallichii VR 05351 6
  • Helicosphaera wallichii VR 05354 7
  • Helicosphaera wallichii VR 05359 8
  • Helicosphaera wallichii VR 05362 9
  • Helicosphaera wallichii VR 05361 10
  • Helicosphaera wallichii VR 05357 11
  • Helicosphaera wallichii VR 05358 12
    10µm
Helicosphaera wallichii, Middle Pleistocene, DSDP Leg 23 Site 229A, Red Sea

Set number: 1251

  • Helicosphaera wallichii VR 05408 1
  • Helicosphaera wallichii VR 05404 2
  • Helicosphaera wallichii VR 05411 3
  • Helicosphaera wallichii VR 05420 4
  • Helicosphaera wallichii VR 05409 5
  • Helicosphaera wallichii VR 05405 6
  • Helicosphaera wallichii VR 05410 7
  • Helicosphaera wallichii VR 05416 8
  • Helicosphaera wallichii VR 05421 9
  • Helicosphaera wallichii VR 05422 10
  • Helicosphaera wallichii VR 05414 11
  • Helicosphaera wallichii VR 05412 12
  • Helicosphaera wallichii VR 05418 13
  • Helicosphaera wallichii VR 05419 14
    10µm
Helicosphaera wallichii, Middle Pleistocene, DSDP Leg 23 Site 229A, Red Sea

Set number: 1252

  • Helicosphaera wallichii VR 05679 1
  • Helicosphaera wallichii VR 05674 2
  • Helicosphaera wallichii VR 05676 3
  • Helicosphaera wallichii VR 05684 4
  • Helicosphaera wallichii VR 05678 5
  • Helicosphaera wallichii VR 05675 6
  • Helicosphaera wallichii VR 05677 7
  • Helicosphaera wallichii VR 05683 8
  • Helicosphaera wallichii VR 05685 9
  • Helicosphaera wallichii VR 05680 10
  • Helicosphaera wallichii VR 05681 11
  • Helicosphaera wallichii VR 05682 12
    10µm
Helicosphaera wallichii, Middle Pleistocene, DSDP Leg 23 Site 229A, Red Sea
Final Epithet
Helicosphaera wallichii (Lohmann, 1902) Okada & McIntyre, 1977
Holococcolith Morphotypes
Remarks

A helicolith characterised by a Type III (Helicosphaera carteri type) blanket, an expanded flange termination, and a central opening bridged by a conjunct oblique bar. In Helicosphaera wallichii, both elongated pores are parallel and oriented obliquely. In contrast, Helicosphaera consimilis features one oblique pore, while the other, located closer to the anterior side, is nearly aligned with the long axis of the helicolith. Helicosphaera wallichii exhibits inclined extinction angles of approximately 58° on the blanket on the distal side and displays length-fast (−) elongation.

References

Lohmann, H., (1902): Die Coccolithophoridae, eine Monographie der Coccolithen bildenden Flagellaten, zugleich ein Beitrag zur Kenntnis des Mittelmeerauftriebs. - Archiv für Protistenkunde. 1: 89-165.

Okada, H. & McIntyre, A., (1977): Modern coccolithophores of the Pacific and North Atlantic Oceans. - Micropaleontology. 23(1): 1-55.

Taxonomy
Helicosphaera
Biostratigraphy
  • Phanerozoic
    • Cenozoic
      • Quaternary
        • Holocene
          • -
            • Recent
      • Neogene
        • Miocene
          • Late Miocene
            • Tortonian
Stratigraphic Range
Tortonian - Recent
Age (Ma)
11.63? - 0.00?
Holotype
Helicosphaera wallichii S12 1

Coccolithophora wallichii Lohmann, 1902

Recent

Near Syracuse, Italy