Foraminifera taxon details
Duostominoidea Brotzen, 1963 †
- Family Duostominidae Brotzen, 1963 †
- Family Oberhauserellidae Fuchs, 1970 †
- Family Robertonellidae Rigaud, Martini & Vachard, 2015 †
- Family Trochosiphoniidae Rigaud, Martini & Vachard, 2015 †
- Family Variostomatidae Kristan-Tollmann, 1963 †
- Family Asymmetrinidae Brotzen, 1963 † accepted as Variostomatidae Kristan-Tollmann, 1963 † (unaccepted > junior subjective synonym, Subjective junior synonym Opinion of Rigaud et al. (2015))
marine, fresh, terrestrial
fossil only
Brotzen, F. (1963). Evolutionary trends in certain calcareous foraminifera on the Paleozoic-Mesozoic boundary, in G. H. R. von Koenigswald et al., ed. Evolutionary Trends in Foraminifera. <em>Amsterdam: Elsevier.</em> 66-78. [details]
Description Emended diagnosis. Duostominina with a planispiral to trochospiral test and chambers partially or entirely covered by...
Diagnosis Test enrolled, planispiral to high trochospiral, nonlamellar, possibly originally aragonitic but commonly poorly preserved,...
Description Emended diagnosis. Duostominina with a planispiral to trochospiral test and chambers partially or entirely covered by umbilical laminar deposits as successive chambers are added so that umbilical side sutures are not visible.
Stratigraphic distribution. Early Triassic (Olenekian)– Middle Jurassic (Bajocian). In Early Jurassic deposits, Duostominoidea are very rare but recent studies have demonstrated their presence in the early Hettangian (von Hillebrandt, 2010, 2012).
(Rigaud et al. (2015)). [details]
Stratigraphic distribution. Early Triassic (Olenekian)– Middle Jurassic (Bajocian). In Early Jurassic deposits, Duostominoidea are very rare but recent studies have demonstrated their presence in the early Hettangian (von Hillebrandt, 2010, 2012).
(Rigaud et al. (2015)). [details]
Diagnosis Test enrolled, planispiral to high trochospiral, nonlamellar, possibly originally aragonitic but commonly poorly preserved,...
Diagnosis Test enrolled, planispiral to high trochospiral, nonlamellar, possibly originally aragonitic but commonly poorly preserved, wall appearing granular and may incorporate some foreign matter; aperture single or double, interiomarginal. M. Triassic (Anisian) to L. Jurassic (Hettangian). (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Duostominoidea Brotzen, 1963 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=720876 on 2026-03-17
Date
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original description
Brotzen, F. (1963). Evolutionary trends in certain calcareous foraminifera on the Paleozoic-Mesozoic boundary, in G. H. R. von Koenigswald et al., ed. Evolutionary Trends in Foraminifera. <em>Amsterdam: Elsevier.</em> 66-78. [details]
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]
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. Duostominina with a planispiral to trochospiral test and chambers partially or entirely covered by umbilical laminar deposits as successive chambers are added so that umbilical side sutures are not visible. Stratigraphic distribution. Early Triassic (Olenekian)– Middle Jurassic (Bajocian). In Early Jurassic deposits, Duostominoidea are very rare but recent studies have demonstrated their presence in the early Hettangian (von Hillebrandt, 2010, 2012).
(Rigaud et al. (2015)). [details]
Diagnosis Test enrolled, planispiral to high trochospiral, nonlamellar, possibly originally aragonitic but commonly poorly preserved, wall appearing granular and may incorporate some foreign matter; aperture single or double, interiomarginal. M. Triassic (Anisian) to L. Jurassic (Hettangian). (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
