Foraminifera taxon details
Conorboidoidea Thalmann, 1952 †
720875 (urn:lsid:marinespecies.org:taxname:720875)
accepted
Superfamily
marine, fresh, terrestrial
fossil only
Description Emended diagnosis. Robertinina with a trochospiral, biserial to uniserial test and chambers traversed by a hemicylindrical...
Diagnosis Test a low to high trochospiral, later stage with reduced number of chambers per whorl, and finally may become uniserial;...
Description Emended diagnosis. Robertinina with a trochospiral, biserial to uniserial test and chambers traversed by a hemicylindrical to cylindrical toothplate-like structure attached to the aperture edge. Stratigraphic distribution. Late Jurassic (Oxfordian)–Late Cretaceous (Maastrichtian).
(Rigaud et al. (2015)). [details]
(Rigaud et al. (2015)). [details]
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 2026-07-20
Date
action
by
original description
Thalmann, H. E. (1952). Bibliography and index to new genera, species and varieties of foraminifera for the year 1951. <em>Journal of Paleontology.</em> 26: 953-992.
page(s): p. 984. [details] Available for editors
[request]
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 [request]
page(s): p. 984. [details] Available for editors
[request]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
[request]From editor or global species database
Description Emended diagnosis. Robertinina with a trochospiral, biserial to uniserial test and chambers traversed by a hemicylindrical to cylindrical toothplate-like structure attached to the aperture edge. Stratigraphic distribution. Late Jurassic (Oxfordian)–Late Cretaceous (Maastrichtian).(Rigaud et al. (2015)). [details]
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]
