arrayname: original
Taxonomy:
Distinguishing features:
Parent taxon (Ophiaster): Appendages formed from strings of highly modified antapical coccoliths, without whorl coccoliths
This taxon: BCs - with laths but no axial structure. Cycle of small antapical BCs with open central area surrounds whorl; link coccoliths often with single spine
Farinacci & Howe catalog pages: Ophiaster reductus
Search data:
LITHS: murolith, elliptical, CA: ca_disjunct, grill, process, CSPH: elongated, equant, appendages, CFC, AAC, XC, CROSS-POLARS: T-prominent, R-prominent, |
Lith size: 0.8->1.5µm; Coccosphere size: 5->8µm; Liths per sphere: 50->100 Data source notes: csph & lith length (BCs) from illustrated specimens; lith numbers from Yang & Wei 2003, range inferred from single estimate |
Geological Range:
Last occurrence (top): Extant. Data source: present in the plankton (Young et al. 2003)
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: [JRY rough estimate]
Plot of occurrence data:
Malinverno, E., Leoni , B. & Galli, P. (2022). Coccolithophore assemblages and a new species of Alisphaera from the Faafu Atoll, Maldives, Indian Ocean. Marine Micropaleontology. 172(102110): 1-16. gs Manton, I. & Oates, K. (1983). Nanoplankton from the Galapagos Islands: Two genera of spectacular coccolithophorids (Ophiaster and Calciopappus) with special emphasis on unmineralized periplast components. Philosophical Transactions of the Royal Society of London. 300: 435-462. gs Young, J. R., Geisen, M., Cros, L., Kleijne, A., Probert, I. & Ostergaard, J. B. (2003). A guide to extant coccolithophore taxonomy. Journal of Nannoplankton Research. S1: 1-132. gs References:
![]() |
Ophiaster reductus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-4-2025
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=966 Go to Archive.is to create a permanent copy of this page - citation notes |
![]() |
This policy contains information about your privacy. By posting, you are declaring that you understand this policy:
This policy is subject to change at any time and without notice.
These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:
Failure to comply with these rules may result in being banned from submitting further comments.
These terms and conditions are subject to change at any time and without notice.
Comments