Rugoglobigerina hexacamerata

Taxonomy

Original description: The small to medium-sized test is a low trochoidal spiral with 6 chambers in the adult. The umbilical side, characterized by a very large, deep, almost circular umbilicus, exhibits fragments of the covering plate along the truncate edges of the chambers. The slightly depressed spiral side shows about 2 whorls. The well-separated subglobular and truncate chambers increase rather slowly in size. The end chamber can be smaller than the penultimate one and is frequently displaced toward the umbilical side. The deep sutures are straight and occasionally slightly curved. The arcuate aperture of the end chamber is large and apparently provided with a minute liplike projection. Those of the preceding chambers are not known. The walls are thick, and the surface is coarsely rugose. The surface of about two-thirds of the chambers of the last volution shows the meridional pattern, whereas that of the earlier chambers is irregularly hispid. Only dextrally coiling individuals were counted.

Entries in the Catalog of original descriptions: Rugoglobigerina reicheli hexacamerata, Rugoglobigerina lobatula, Globotruncana (Rugoglobigerina) hexacamerata subhexacamerata

Geological Range:
Last occurrence (top): within A. mayaroensis zone (67.64-69.27Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within Campanian Stage (72.17-83.65Ma, 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
• Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
• Taxon plotted: Rugoglobigerina hexacamerata, synonyms included - Globotruncana hexacamerata subhexacamerata; Rugoglobigerina hexacamerata; Rugoglobigerina lobatula; Rugoglobigerina pennyi; Rugoglobigerina subhexacamerata;
• See also space-time plot :: Samples map :: Parent: Rugoglobigerina

Rugoglobigerina hexacamerata compiled by the pforams@mikrotax project team viewed: 8-2-2026 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110500 Go to Archive.is to create a permanent copy of this page - citation notes

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