Specimens which cannot be assigned to established species
| Daughter taxa (time control age-window is: 0-800Ma) | ||||
| | | Gorbachikella depressa | |
| | | Gorbachikella grandiapertura | |
| | | Gorbachikella kugleri | |
| Gorbachikella neilii | |||
| Gorbachikella sp. Specimens which cannot be assigned to established species | ||||
Taxonomy
Original description: Test trochospiral, consisting of two or more whorls, initially with four or more chambers per whorl, and final whorl of four chambers, which are typically subglobular or reniform; spiral side completely evolute, umbilical side almost completely involute but with a distinct, true umbilicus; aperture intraumbilical, a low or high symmetrical arch; wall calcareous, microperforate (external diameters < 1.5µm), smooth, not muricate, probably calcitic.
Entries in the Catalog of original descriptions: Gorbachikella
Geological Range:
Last occurrence (top): at top of Aptian Stage (100% up, 113Ma, in Aptian stage). Data source: Total of range of species in this database
First occurrence (base): in upper part of Valanginian Stage (80% up, 135Ma, in Valanginian stage). Data source: Total of range of species in this database
Plot of range and occurrence data:
References:
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Gorbachikella compiled by the pforams@mikrotax project team viewed: 20-3-2023
Short stable page link: https://mikrotax.org/pforams/index.php?id=110205 Go to Archive.is to create a permanent copy of this page - citation notes |
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