pforams@mikrotax - Huberella huberi pforams@mikrotax - Huberella huberi

Huberella huberi

Classification: pf_mesozoic -> Heterohelicidae -> Huberella -> Huberella huberi
Sister taxa: H. huberi, H. praehuberi, H. sp.


Citation: Huberella huberi Georgescu 2007
taxonomic rank: Species
Basionym: Huberella huberi

Type images:

Original description: Test is biserial throughout, consisting of thirteen to fourteen chambers, initiated with a small-sized proloculus, which is followed by a slightly larger second chamber. Earlier chambers are subrectangular, becoming reniform in the adult stage, tilted to the test axis of growth and increasing gradually in size as added. Later chambers present a posterior projection, which is attached to the previous chamber in the row and the periapertural flange of the previous-formed chamber. Sutures are distinct, depressed and oblique to the axis of growth. Test is symmetrical in edge view, with broadly rounded periphery and without peripheral structures. Aperture is situated at the base of the last-formed chamber and is bordered by two symmetrically developed periapertural flanges. False accessory apertures can be developed along the zigzag suture due to the test-wall folding in the proximity of the cameral projections and periapertural structures. Chamber surface is covered throughout by quasi-longitudinal fine costae. Test wall is calcareous, hyaline and microperforate. Pores are mostly situated in the spaces between the costae or, more rarely onto these strictures resulting in discontinuous costate ornamentation. Pore diameter is in the range of 0.7-1.0 microns.

Entries in the Catalog of original descriptions: Huberella huberi

Character matrix
test outline:Subtriangularchamber arrangement:Biserialedge view:Compressedaperture:Interiomarginal
sp chamber shape:Reniformcoiling axis:N/Aperiphery:N/Aaperture border:Thin flange
umb chbr shape:Reniformumbilicus:N/Aperiph margin shape:Broadly roundedaccessory apertures:N/A
spiral sutures:Moderately depressedumb depth:N/Awall texture:Finely costateshell porosity:Microperforate: <1┬Ám
umbilical or test sutures:Moderately depressedfinal-whorl chambers:2-2 N.B. These characters are used for advanced search. N/A - not applicable

Geological Range:
Last occurrence (top): within M. schneegansi zone (89.75-92.51Ma, top in Turonian stage). Data source: [copied from Chronos database]
First occurrence (base): within H. helvetica zone (92.51-93.52Ma, base in Turonian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:


Georgescu, M. D. (2007a). A new planktonic heterohelicid foraminiferal genus from the Upper Cretaceous (Turonian). Micropaleontology. 53: 212-220. gs


Huberella huberi compiled by the pforams@mikrotax project team viewed: 22-7-2024

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