Nannotax3 - Mesozoic

Chiastella

Classification: Mesozoic -> Podorhabdales -> Biscutaceae -> Chiastella
Sister taxa: Biscutum, Boletuvelum, Chiastella, Crucibiscutum, Discorhabdus, Gaarderella, Gephyrobiscutum, Helicorhabdus, Jimenezberrocosoia, Seribiscutum, Similiscutum, Sollasites,

Distinguishing features: Elliptical, minute with diagonal cross suporting a hollow spine

Daughter taxa: (blue => in age window 0-800Ma)
				Chiastella grana

Taxonomy:

Citation: Chiastella Lambert 1993

Rank: Genus

Type species: Chiastella grana Lambert, 1993

Notes & discussion: Assignment here to Biscutaceae is tentative since only a couple of SEM images are available, but if it is correct then the one species, C. grana, could be reassigned to Crucibiscutum.

Farinacci & Howe catalog pages: Chiastella *

Distinguishing features: Elliptical, minute with diagonal cross suporting a hollow spine

Size: <2 µm

Geological Range:
Last occurrence (top): at top of Albian Stage (100% up, 100.5Ma, in Albian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Albian Stage (0% up, 113Ma, in Albian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Biscutaceae

References:

Lambert, B. (1993). Nannofossiles calcaires de l'Albien supérieur et du Vraconnien du Cameroun méridional (Deuxième Partie). Cahiers de Micropaleontologie. 8(2): 183-225. gs

Chiastella compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 8-12-2019

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10243 Go to Archive.is to create a permanent copy of this page - citation notes

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