Globorotalia tosaensis

Taxonomy

Catalog entries: Globorotalia tosaensis

Distinguishing features:
Parent taxon (truncatulinoides lineage): G. crasula - crassaformis - tosaensis - truncatulinoides lineage, predominantly conicotruncate
This taxon: Low trochospiral, strongly umbilico-convex with flat spiral side, commonly 5 chambers in final whorl

Description

Biogeography and Palaeobiology

Most likely ancestor:
Globorotalia tenuitheca - at confidence level 2 (out of 5). Data source: Stewart 2003 fig. 6.10; Aze et al. 2011, appendix 5.
Likely descendants: Globorotalia excelsa; Globorotalia pachytheca; Globorotalia truncatulinoides; plot with descendants

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at base of PT1b subzone (1% up, 0.6Ma, in Ionian stage). Data source: Wade et al. (2011), zonal marker
First occurrence (base): in upper part of PL5 [Atl.] zone (72% up, 2.6Ma, in Piacenzian stage). Data source: Wade et al. (2011), additional event; position within zone determined by linear interpolation from data in table 1 of Wade et al. (2011).

Plot of 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.
• Grey shading between taxa indicates intergrading species within an anagenetic lineage (data from Lamyman et al. 2026).
• Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
• Taxon plotted: Globorotalia tosaensis, synonyms included - Globorotalia tosaensis; Globorotalia tosaensis s.l.; Globorotalia tosaensis tenuitheca; Globorotalia tosaensis tosaensis; Globorotalia tosaensis truncatulinoides; Truncorotalia tosaensis; Truncorotalia tosaensis tenuitheca; Truncorotalia tosaensis tosaensis; Turborotalia tosaensis;
• See also space-time plot :: Samples map :: Parent: truncatulinoides lineage

Primary source for this page: Kennett & Srinivasan 1983, p.148

Globorotalia tosaensis compiled by the pforams@mikrotax project team viewed: 15-8-2026 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=104135 Go to Archive.is to create a permanent copy of this page - citation notes

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