Liuenella falklandica

Taxonomy

Original description: Test with very low trochospire, nearly planispiral, consisting of 12 to 17 globular to subglobular chambers, which gradually and slowly increase in size as added. There are 5 K to 6 chambers in the final whorl. Sutures are distinct, straight, radial and depressed. Test slightly asymmetrically biconvex in edge view. Periphery broadly rounded with an imperforate peripheral band, which is developed on all the chambers of the final whorl. Main aperture is in the shape of a low to medium high arch, interiomarginal, umbilical-peripheral in position and bordered by an imperforate lip. Umbilicus is of medium size, its diameter reaching approximately one third of the maximum test diameter. Relict apertures and periapertural structures are present in the umbilical area. Test wall calcitic, hyaline, perforate; perforation diameter varies between 1.7 and 3.1 mm; crater-like pores are developed on the earlier chambers of the test. Perforations can be occasionally present in the imperforate band area along the sutures. Test surface smooth."

Entries in the Catalog of original descriptions: Liuella falklandica

Geological Range:
Last occurrence (top): within G. ventricosa zone (76.18-79.20Ma, top in Campanian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. elevata zone (79.33-83.65Ma, base in Campanian 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: Liuenella

Liuenella falklandica compiled by the pforams@mikrotax project team viewed: 12-2-2026 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110316 Go to Archive.is to create a permanent copy of this page - citation notes

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