pforams@mikrotax - Pseudoguembelitria blakenosensis pforams@mikrotax - Pseudoguembelitria blakenosensis

Pseudoguembelitria blakenosensis

Classification: pf_mesozoic -> Hedbergellidae -> Pseudoguembelitria -> Pseudoguembelitria blakenosensis
Sister taxa: P. blakenosensis, P. sp.


Citation: Pseudoguembelitria blakenosensis Huber & Leckie 2011
taxonomic rank: Species
Basionym: Pseudoguembelitria blakenosensis

Type images:

Original description: Test wall microperforate, circular pores 0.3 to 0.7 um, surface with weakly developed and randomly scattered perforation cones, small pustules may occur in the umbilical region. Test small, globular with early hedbergellid stage, overall diameter/width ratio averaging 1.14; chambers increasing gradually to moderately in size, 11 to 13 coiled in a variable trochospire, 4.5 to 5.0 subglobular chambers in the initial whorl and three to four globular chambers in the final whorl; sutures are depressed, straight to slightly curved; aperture is a low to moderate, semicircular interiomarginal arch at the base of the final chamber, without periapertural structures.

Entries in the Catalog of original descriptions: Pseudoguembelitria blakenosensis

Character matrix
test outline:Lobatechamber arrangement:Trochospiraledge view:Spiroconvexaperture:Interiomarginal
sp chamber shape:Globularcoiling axis:Moderate-highperiphery:N/Aaperture border:N/A
umb chbr shape:Globularumbilicus:Wideperiph margin shape:Broadly roundedaccessory apertures:None
spiral sutures:Moderately depressedumb depth:Shallowwall texture:Perforation conesshell porosity:Microperforate: <1┬Ám
umbilical or test sutures:Moderately depressedfinal-whorl chambers:3-4 N.B. These characters are used for advanced search. N/A - not applicable

Geological Range:
Last occurrence (top): at top of Paraticinella rohri zone (99% up, 113.3Ma, in Aptian stage). Data source: Huber and Leckie, 2011
First occurrence (base): near base of Hedbergella infracretacea zone (10% up, 116.8Ma, in Aptian stage). Data source: Huber and Leckie, 2011

Plot of range and occurrence data:


Huber, B. T. & Leckie, R. M. (2011). Planktic foraminiferal species turnover across deep-sea Aptian/Albian boundary sections. Journal of Foraminiferal Research. 41: 53-95. gs


Pseudoguembelitria blakenosensis compiled by the pforams@mikrotax project team viewed: 17-7-2024

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