Foraminifera taxon details
Conorboidoidea Thalmann, 1952 †
marine, fresh, terrestrial
fossil only
Not documented
Diagnosis Test a low to high trochospiral, later stage with reduced number of chambers per whorl, and finally may become uniserial;...
Diagnosis Test a low to high trochospiral, later stage with reduced number of chambers per whorl, and finally may become uniserial; aperture a low interiomarginal umbilical slit in trochospiral taxa, becoming terminal and central in the uniserial stage; a prominent hemicylindrical toothplate projecting inward from the aperture as a columellalike structure that even in the uniserial stage changes in orientation from chamber to chamber, reflecting the ancestral coiled state. L. Cretaceous (U. Aptian) to U. Cretaceous (Maastrichtian). (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2021). World Foraminifera Database. Conorboidoidea Thalmann, 1952 †. Accessed at: https://marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=720875 on 2025-05-24
Date
action
by
basis of record
Loeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold Company, New York. 970pp., available online at https://books.google.pt/books?id=n_BqCQAAQBAJ [details] Available for editors 
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[request]From editor or global species database
Diagnosis Test a low to high trochospiral, later stage with reduced number of chambers per whorl, and finally may become uniserial; aperture a low interiomarginal umbilical slit in trochospiral taxa, becoming terminal and central in the uniserial stage; a prominent hemicylindrical toothplate projecting inward from the aperture as a columellalike structure that even in the uniserial stage changes in orientation from chamber to chamber, reflecting the ancestral coiled state. L. Cretaceous (U. Aptian) to U. Cretaceous (Maastrichtian). (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
