Foraminifera taxon details
Biwaellinae Davydov, 1984 †
721080 (urn:lsid:marinespecies.org:taxname:721080)
accepted
Subfamily
- Genus Biwaella Morikawa & Isomi, 1960 †
- Genus Douglassites Read & Nestell, 2018 †
- Genus Dutkevichites Davydov, 1984 †
- Genus Oketaella Thompson, 1951 †
- Genus Longlinella Huang in Huang & Zeng, 1984 † accepted as Oketaella Thompson, 1951 † (Subjective junior synonym Opinion of Vachard et al. (2018))
marine, fresh, terrestrial
fossil only
Davydov, V. I. (1984). К вопросу о происхождении швагерин - On the question of the origin of the Schwagerinidae. <em>Paleontologicheskii Zhurnal - Paleontological Journal.</em> 4: 3-16 (In Russian)., available online at https://www.researchgate.net/profile/Vladimir_Davydov5/publication/285778104_K_voprosy_o_proiskhozhdenii_shvagerin/links/597a0e8baca272e8cc0d3794/K-voprosy-o-proiskhozhdenii-shvagerin.pdf [details] Available for editors 
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Description Test shortly fusiform, often asymmetrical. Early stage discoidal; later stage more or less fusiform with acute poles. Septa...
Diagnosis Test nautiloid, earliest volution may be endothyroid, later planispiral, axis of coiling short in the early stage, sharply...
Description Test shortly fusiform, often asymmetrical. Early stage discoidal; later stage more or less fusiform with acute poles. Septa numerous, unfluted in the center but slightly fluted at the poles, especially in the outer whorls. Chomata low, asymmetrical and bordering a broad and low tunnel. Wall bilayered with a tectum and an inner porous layer. Aperture terminal simple.
(Vachard and Le Coze (2024)). [details]
(Vachard and Le Coze (2024)). [details]
Diagnosis Test nautiloid, earliest volution may be endothyroid, later planispiral, axis of coiling short in the early stage, sharply...
Diagnosis Test nautiloid, earliest volution may be endothyroid, later planispiral, axis of coiling short in the early stage, sharply increasing in length from the third whorl, so that test becomes subcylindrical, septa plane to weakly fluted; wall undifferentiated or with tectum and primatheca in early whorls, later with keriotheca, chomata may be present. U. Carboniferous (Gzhel'ian) to L. Permian (Asselian). (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Biwaellinae Davydov, 1984 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=721080 on 2025-05-21
Date
action
by
original description
Davydov, V. I. (1984). К вопросу о происхождении швагерин - On the question of the origin of the Schwagerinidae. <em>Paleontologicheskii Zhurnal - Paleontological Journal.</em> 4: 3-16 (In Russian)., available online at https://www.researchgate.net/profile/Vladimir_Davydov5/publication/285778104_K_voprosy_o_proiskhozhdenii_shvagerin/links/597a0e8baca272e8cc0d3794/K-voprosy-o-proiskhozhdenii-shvagerin.pdf [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]
[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 Test shortly fusiform, often asymmetrical. Early stage discoidal; later stage more or less fusiform with acute poles. Septa numerous, unfluted in the center but slightly fluted at the poles, especially in the outer whorls. Chomata low, asymmetrical and bordering a broad and low tunnel. Wall bilayered with a tectum and an inner porous layer. Aperture terminal simple.(Vachard and Le Coze (2024)). [details]
Diagnosis Test nautiloid, earliest volution may be endothyroid, later planispiral, axis of coiling short in the early stage, sharply increasing in length from the third whorl, so that test becomes subcylindrical, septa plane to weakly fluted; wall undifferentiated or with tectum and primatheca in early whorls, later with keriotheca, chomata may be present. U. Carboniferous (Gzhel'ian) to L. Permian (Asselian). (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
