pforams@mikrotax - Astrorotalia pforams@mikrotax - Astrorotalia

Astrorotalia


Classification: pf_cenozoic -> Truncorotaloididae -> Astrorotalia
Sister taxa: Alicantina, Acarinina, Praemurica ⟩⟨ Igorina, Pearsonites, Planorotalites, Astrorotalia ⟩⟨ Morozovella, Morozovelloides
Daughter taxa (time control age-window is: 0-800Ma)
Astrorotalia palmerae
This form is uniquely distinguished by the peripheral keel extending into blade-like keel-spines on each chamber.
Astrorotalia sp.
Specimens which cannot be assigned to established species

Taxonomy

Citation: Astrorotalia Turnovsky, 1958
taxonomic rank: Genus
Type species: Globorotalia palmerae Cushman and Bermúdez, 1937

Catalog entries: Astrorotalia

Distinguishing features:
Parent taxon (Truncorotaloididae): Muricate
This taxon: Low trochospiral test with keel-spines

NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus.
They are being edited as the site is developed and comments on them are especially welcome.

Description

Biogeography and Palaeobiology

Most likely ancestor: Planorotalites - at confidence level 0 (out of 5). Data source: Berggren et al. 2006.

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at top of E7 zone (100% up, 45.7Ma, in Lutetian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within E7 zone (45.72-50.20Ma, base in Ypresian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

Primary source for this page: Berggren et al. 2006 - Eocene Atlas, chap. 12, p. 379

References:

Berggren, W. A., Olsson, R. K. & Premoli Silva, I. (2006a). Taxonomy, biostratigraphy and phylogenetic affinities of Eocene Astrorotalia, Igorina, Planorotalites, and Problematica (Praemurica? lozanoi). In, Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 41(Chap 12): 377-400. gs

Bermudez, P. J. (1937b). Nuevas especies de Foraminiferos del Eoceno de Cuba. Memorias de la Sociedad Cubana de Historia Natural “Felipe Poey”. 11: 137-150. gs

Turnovsky, K. (1958). Eine neue Art von Globorotalia Cushman aus dem Eozaen Anatoliens und ihre Zuordnung su einer neuen Untergattung. Bulletin of the Geological Society of Turkey. 6(2): 80-86. gs


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Astrorotalia compiled by the pforams@mikrotax project team viewed: 20-4-2024

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Short stable page link: https://mikrotax.org/pforams/index.php?id=100035 Go to Archive.is to create a permanent copy of this page - citation notes



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