Variant: Phaeocystales is regarded here as a variant of Haptophytes.
I.e. It is a subjective junior synonym, but some workers many find it useful for some studies (e.g. experienced biostratigraphers working with abundant, well preserved material), but for most purposes differentiating it is not reccomended. Please do use the comments section at the bottom of this page if you wish to discuss this interpretation
| Daughter taxa (time control age-window is: 0-800Ma) | Granddaughter taxa | ||||
| | | | Phaeocystaceae | |
Taxonomy:
Catalog entries: Phaeocystales
Original description: Swimming cells with two more or less equal flagella and a short, noncoiling haptonema; chloroplasts 1-4, parietal; cell body covered with flat scales of two sizes. Cells sometimes with ejectile material composed of a-chitin. Life cycle com plex with nonmotile and motile stages though nonmotile cells not known in all species; if present, situated parietally in ge latinous spherical or irregularly lobed colonies, usually with no appendages or scales; the former, if present, usually short or incomplete.
Geological Range:
Last occurrence (top): Extant Data source: Total of range of species in this database
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: Total of range of species in this database
Edvardsen, B., Eikrem, W., Green, J. C., Andersen, R. A., Moon-Van Der Staay, S. Y. & Medlin, L. K. (2000). Phylogenetic reconstructions of the Haptophyta inferred from 18S ribosomal DNA sequences and available morphological data. Phycologia. 39: 19-35. gsReferences:
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Phaeocystales compiled by Jeremy R. Young viewed: 7-12-2021
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=20288 Go to Archive.is to create a permanent copy of this page - citation notes |
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