Contusotruncana plummerae

Taxonomy

Original description: "Flat or slightly convex on the dorsal side, two keels equally developed, somewhat diverging, peripheral band only slightly oblique to the plane of coiling; four to five chambers in the last whorl, long and arched as in the previous subspecies [Globotruncana fornicata subsp. Manaurensis Gandolfi, 1955] but longitudinally inflated with well-developed median inner marginal depression in the last chambers. On the ventral side, the chambers are usually flat with long, curved raised sutures, but the early ones are occasionally inflated and short, with the marginal elevations disappearing in the radial sutural depressions. The test is dextrally coiled.

Entries in the Catalog of original descriptions: Globotruncana fornicata plummerae, Globotruncana fornicata ackermanni, Globotruncana adamsi, Globotruncana fornicata cesarensis, Globotruncana fornicata globulocamerata, Globotruncana wilsoni, Globotruncana lunaris

Geological Range:
Last occurrence (top): within R. fructicosa zone (69.27-70.14Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): at base of C. plummerae zone (0% up, 79.3Ma, in Campanian stage). Data source: zonal marker (from Timescale Creator)

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: Contusotruncana plummerae, synonyms included - Contusotruncana ackermanni; Contusotruncana cesarensis; Contusotruncana globulocamerata; Contusotruncana lunaris; Contusotruncana plummerae; Globorotalia wilsoni; Globotruncana adamsi; Globotruncana fornicata ackermanni; Globotruncana fornicata cesarensis; Globotruncana fornicata globulocamerata; Globotruncana lunaris; Globotruncana plummerae; Rosita plummerae; Turborotalia wilsoni;
• See also space-time plot :: Samples map :: Parent: Contusotruncana

Contusotruncana plummerae compiled by the pforams@mikrotax project team viewed: 11-9-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110075 Go to Archive.is to create a permanent copy of this page - citation notes

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