Falsotruncana maslakovae

Taxonomy

Original description: Translated from French: Diagnosis: same features as those of the genus for which this form is the type species. Very low trochospiral test; the very flat profile is truncate even in the last chamber, lending the species its characteristic appearance. The poreless peripheral band reaches the last chamber (there, often perforate, cf. fig. 1d). The beaded double keel, not found in the last chamber, runs along the margins of the peripheral band in the remaining chambers.

Mêmes caractères que ceux du genre dont elle est l'espèce-type. Le test est une trochospire très basse: le profil très plat est tronqué même au niveau de la dernière loge, donnant son aspect caractéristique à l'espèce. Le bandeau périphérique imperforé atteint la dernière loge (sur celle-ci. il est souvent perforé, cf. pl. 2. 68 M. Caron fig. 1d). La double carène pustuleuse, qui le borde sur toutes les autres loges, ne se rencontre pas sur cette dernière loge.

Entries in the Catalog of original descriptions: Falsotruncana maslakovae

Geological Range:
Last occurrence (top): within M. schneegansi zone (89.75-92.51Ma, top in Turonian stage). Data source: [copied from Chronos database]
First occurrence (base): within M. schneegansi zone (89.75-92.51Ma, base in Turonian 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: Falsotruncana maslakovae, synonyms included - Falsotruncana maslakovae;
• See also space-time plot :: Samples map :: Parent: Falsotruncana

Falsotruncana maslakovae compiled by the pforams@mikrotax project team viewed: 12-10-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110104 Go to Archive.is to create a permanent copy of this page - citation notes

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