pforams@mikrotax - Rectoguembelina sp.

pforams@mikrotax - Rectoguembelina sp. pforams@mikrotax - Rectoguembelina sp.

Rectoguembelina sp.

Classification: pf_cenozoic -> Guembelitrioidea -> Heterohelicidae -> Rectoguembelina -> Rectoguembelina sp.
Sister taxa: R. cretacea, R. sp.

Taxonomy

Rank: generic level id

Catalog entries:

Distinguishing features:
Parent taxon (Rectoguembelina): Transition from biserial to uniserial portion of test very abrupt, occurring after first four or more pairs of biserial chambers, without an intervening interval of gradually increasing chamber overlap. Apertures on biserial portion interiomarginal with a small, narrow arch; apertures on uniserial chambers terminal, circular, and aligned in rectilinear fashion, without lip or toothplate. Wall calcareous, microperforate; surface smooth to finely pustulose.
This taxon: Specimens which cannot be assigned to established species

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

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage).
First occurrence (base): within (-Ma, base in "Holocene" stage).

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
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Rectoguembelina

References:

Rectoguembelina sp. compiled by the pforams@mikrotax project team viewed: 1-6-2023

Taxon Search:

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Short stables page link: https://mikrotax.org/pforams/index.php?id=100271 Go to Archive.is to create a permanent copy of this page - citation notes

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