Huberella huberi

Taxonomy

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

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:

• 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: Huberella

Huberella huberi compiled by the pforams@mikrotax project team viewed: 7-9-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110294 Go to Archive.is to create a permanent copy of this page - citation notes

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