| Daughter taxa (blue => in age window 0-300Ma) | Granddaughter taxa | |||
| | | Test subconical, chambers globular and inflated, triserial throughout, sutures distinct, depressed; wall calcareous, optically radial, finely and irregularly perforate, with each pore elevated on a pore mound; aperture an interiomarginal arch at the base of the final chamber, with an imperforate bordering lip. | |
Taxonomy
Original description: Guembelitriinae Montanaro Gallitelli, 1957: Test triserial; chambers globular; aperture basal, arched, simple. [Montanaro Gallitelli, 1957 p. 136]
Entries in the Catalog of original descriptions: Guembelitriidae;
Distinguishing features: Early stage trochospiral, triserial, or biserial, later may show serial reduction or proliferation.
Diagnostic characters: Early stage trochospiral, triserial, or biserial, later may show serial reduction or proliferation.
Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): within Aptian Stage (112.95-126.30Ma, base in Aptian stage). Data source: Total of range of species in this database
Plot of occurrence data:
Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous
Loeblich, A.R., Jr. & Tappan, H., (1988). Foraminiferal Genera and Their Classification (Volume I-II). Van Nostrand Reinhold Co., New York, 1059 pp.References:
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Guembelitriidae compiled by the pforams@mikrotax project team viewed: 25-6-2018
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