pforams@mikrotax - Streptochilus globulosum

pforams@mikrotax - Streptochilus globulosum pforams@mikrotax - Streptochilus globulosum

Streptochilus globulosum

Classification: pf_cenozoic -> Benthic origins -> Bolivina -> Bolivina variabilis -> Streptochilus globulosum
Sister taxa: S. globulosum, S. globigerum

Resig 1989 pl1-02.JPG
Resig 1989 pl1-01.JPG

Taxonomy

Citation: Streptochilus globulosum (Cushman, 1933)

Rank: species

Basionym: Bolivina globulosa

Synonyms:

Streptochilus tokelauae (Boersma) = Bolivina tokelauae Boersma 1969 [Resig & Kroopnick 1983]

Catalog entries: Bolivina globulosa, Bolivina tokelauae

Type images:

holotype: B. globulosa

Distinguishing features:
Parent taxon (Bolivina variabilis):
This taxon: Smooth test, chambers not inflated

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

Character matrix
test outline: Subtriangular chamber arrangement: Biserial edge view: Compressed aperture: Interiomarginal
sp chamber shape: Globular coiling axis: N/A periphery: N/A aperture border: Thin flange
umb chbr shape: Globular umbilicus: N/A periph margin shape: Narrowly rounded accessory apertures: None
spiral sutures: Moderately depressed umb depth: N/A wall texture: Smooth shell porosity: Microperforate: <1µm
umbilical or test sutures: Moderately depressed final-whorl chambers: 2.0-2.0 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology

Geographic distribution

Most likely ancestor: Streptochilus globigerum - at confidence level 2 (out of 5). Data source: Resig 1989, fig. 2.

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: Resig 1989
First occurrence (base): within N20 zone (3.10-4.37Ma, base in Zanclean stage). Data source: Resig 1989

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: Bolivina variabilis

References:

Cushman, J. A. (1933d). Some new Recent foraminifera from the Tropical Pacific. Contributions from the Cushman Laboratory for Foraminiferal Research. 9(4): 77-95. gs V O

Resig, J. M. (1989). Stratigraphic distribution of late Neogene species of the planktonic foraminifer Streptochilus in the Indo-Pacific. Micropaleontology. 35(49-62): -. gs

Streptochilus globulosum compiled by the pforams@mikrotax project team viewed: 26-3-2023

Taxon Search:

Advanced Search

AphiaID: 559000 Nomenclatural data on WoRMS
Short stables page link: https://mikrotax.org/pforams/index.php?id=104224 Go to Archive.is to create a permanent copy of this page - citation notes

Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information

1000

Notify me of new comments via email.

Remember my form inputs on this computer.

test outline:	Subtriangular	chamber arrangement:	Biserial	edge view:	Compressed	aperture:	Interiomarginal
sp chamber shape:	Globular	coiling axis:	N/A	periphery:	N/A	aperture border:	Thin flange
umb chbr shape:	Globular	umbilicus:	N/A	periph margin shape:	Narrowly rounded	accessory apertures:	None
spiral sutures:	Moderately depressed	umb depth:	N/A	wall texture:	Smooth	shell porosity:	Microperforate: <1µm
umbilical or test sutures:	Moderately depressed	final-whorl chambers:	2.0-2.0	N.B. These characters are used for advanced search. N/A - not applicable