Hedbergella tuschepsensis

Taxonomy

Original description: "Test small, round in outline, with a broadly rounded, scalloped peripheral margin. Consists of 9-10 spherical, rapidly enlarging chambers, forming 2-2.5 whorls with 4 chambers in each whorl. Chambers of initial whorl very small, distinctly discernible on dorsal side of test only at magnifications of X 80-120, lie nearly on a level with the following whorl or slightly over it. Chambers of later whorl much larger, the last one is especially distinguished, with a diameter barely not exceeding that of the 2 previous chambers taken together. In the center of the ventral side is a broad depressed umbilicus. Spiral and septal sutures distinct, depressed, last ones on dorsal side nearly straight, short, on ventral side a little longer, slightly curved. Aperture slitlike, extends along margin suture from umbilicus to peripheral margin. Wall very thin, finely perforate, semitransparent, smooth, shiny."

Entries in the Catalog of original descriptions: Globigerina tuschepsensis

Emended description:

Geological Range:
Last occurrence (top): within G. blowi zone (120.55-124.40Ma, top in Aptian stage). Data source: [copied from Chronos database]
First occurrence (base): within H. similis zone (124.40-126.01Ma, base in Barremian 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: Hedbergella

Hedbergella tuschepsensis compiled by the pforams@mikrotax project team viewed: 19-9-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110271 Go to Archive.is to create a permanent copy of this page - citation notes

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