Caulophorolithus sigmoides

(Bramlette & Sullivan, 1961) Varol, n. comb. Jan 21, 2022

Set number: 1319

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10µm

Caulophorolithus sigmoides, Late Paleocene, DSDP Leg 25, Site 245, Mozambique Channel (Davie Ridge), Indian Ocean

Set number: 1307

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10µm

Caulophorolithus sigmoides, Late Paleocene, ODP Leg 171B, Site 1051A, Black Nose, Western North Atlantic

in mobile mount

Set number: 1310

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10µm

Caulophorolithus sigmoides, Late Paleocene, Santos Basin, Brazil

Set number: 1308

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10µm

Caulophorolithus sigmoides, Late Paleocene, Santos Basin, Brazil

Set number: 1309

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10µm

Caulophorolithus sigmoides, Late Paleocene, Santos Basin, Brazil

Set number: 1315

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10µm

Caulophorolithus sigmoides, Early Paleocene, Alabama, USA

Set number: 4410

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10µm

Caulophorolithus sigmoides, Middle Paleocene, DSDP Leg 25, Site 245, Mozambique Channel (Davie Ridge), Indian Ocean

Final Epithet

Caulophorolithus sigmoides (Bramlette & Sullivan, 1961) Varol, n. comb.

Basionym

Zygodiscus sigmoides Bramlette & Sullivan, 1961

Synonyms

Zeugrhabdotus recens Bown et al., 2023; preservational morphotype

Remarks

The persistent highest occurrence of this species is at 56.5Ma.

References

Bramlette, M. N. & Sullivan, F. R. 1961. Coccolithophorids and related nannoplankton of the Early Tertiary in California. Micropaleontology 7(2): 129-188.

Bown, P. R., Kim, H. & Gibbs, S. J. 2023. Danian calcareous nannofossil evolution and taxonomy with focus on sites from the North Atlantic Ocean (IODP Expedition 342, Sites U1403 and U1407). Journal of Nannoplankton Research. 41(2): 110-157

Taxonomy

Caulophorolithus

Uncategorised

Biostratigraphy

Stratigraphic Range

Danian - Ypresian

Age (Ma)

66.04 - 54.70

Holotype

Zygodiscus sigmoides Bramlette & Sullivan, 1961

Late Paleocene

Lodo section, northwestern Fresno County, central California, USA