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| Daughter taxa: (blue => in age window 0-800Ma) | ||||
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| Specimens which cannot be assigned to established species | ||||
Taxonomy
Blowiella Krechmar and Gorbachik [according to Verga & Premoli Silva 2003]
Original description: Globigerinelloides Cushman & Ten Dam 1948:
Entries in the Catalog of original descriptions: Globigerinelloides;
Distinguishing features: Test planispirally enrolled, biumbilicate, involute to evolute, lobulate in outline, chambers globular to somewhat elongate in partially evolute species, sutures depressed; wall calcareous, perforate, optically radial; aperture equatorial and interiomarginal, bordered by a narrow imperforate lip, broad and low to moderately arched, the lateral portions remaining open as relict supplementary apertures around the umbilicus when new chambers are added.
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 Valanginian Stage (133.88-139.39Ma, base in Valanginian 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. & Tappan, H., (1988). Foraminiferal Genera and Their Classification (Volume I-II)Van Nostrand Reinhold Co., New York, 1059 pp. Moullade, M.; Bellier, J.-P. & Tronchetti, G., (2002). Hierarchy of criteria, evolutionary processes and taxonomic simplification in the classification of Lower Cretaceous planktonic foraminifera. Cretaceous Research, 23(1): 111-148. Smith, C.C. & Pessagno, E.A., (1973). Planktonic foraminifera and stratigraphy of the Corsicana formation (Maestrichtian) North-central Texas. Cushman Foundation for Foraminiferal Research, Special Publication, 12: 1-67. Verga, D. & Premoli Silva, I., (2003). Early Cretaceous planktonic foraminifera from the Tethys: The large many-chambered representatives of the genus Globigerinelloides. Cretaceous Research, 24: 661-690. Verga, D. & Premoli Silva, I., (2003). Early Cretaceous planktonic foraminifera from the Tethys: The small few-chambered representatives of the genus Globigerinelloides. Cretaceous Research, 24: 305-334.References:
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Globigerinelloides compiled by the pforams@mikrotax project team viewed: 23-1-2019
Short stable page link: http://mikrotax.org/pforams/index.php?id=110116 Go to Archive.is to create a permanent copy of this page - citation notes |