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Foraminifera taxon detailsKwantoella Sakagami & Omata, 1957 †
 721768 (urn:lsid:marinespecies.org:taxname:721768)
accepted
Genus
Kwantoella fujimotoi Sakagami & Omata, 1957 † (type by original designation)
marine,
fossil only
feminine
Sakagami, S.; Omata, T. (1957). Lower Permian fusulinids from Shiraiwa, northwestern part of Ome, Nishitama-gun, Tokyo-to, Japan. <em>日本地質學地理學輯報 - Japanese journal of geology and geography.</em> 28: 247-264.
page(s): p. 251 [details] Available for editors  [request]
Description Revised diagnosis. Small, elongate fusiform to cylindrical schwagerinid genus with relatively small proloculus, and...
Description Revised diagnosis. Small, elongate fusiform to cylindrical schwagerinid genus with relatively small proloculus, and compactly coiled inner volutions and outer relatively loosely coiled ones. Wall thin and consist of a tectum and lower less dense layer in the inner volutions and of a tectum and fine keriotheca in the outer ones. Septa thin and weakly fluted in the axial regions. Weak axial fillings observed only in the inner volutions. Low chomata present throughout growth. Distribution and age. Panthalassan mid-oceanic seamounts (Shiraiwa, Yayamadake, and probably Akiyoshi limestones, SW Japan); Indochina (Vietnam). Late Gzhelian to early (earliest?) Permian. (Ueno (2022)). [details] Diagnosis Test small, elongate fusiform, axis of coiling straight, septa numerous, straight and unfluted in the central part of the...
Diagnosis Test small, elongate fusiform, axis of coiling straight, septa numerous, straight and unfluted in the central part of the test but may be fluted toward the poles; wall of two layers, a tectum and less dense lower layer or keriotheca, tunnel single, chomata poorly developed, axial fillings restricted to the polar regions of the early whorls but more extensive in later whorls. L. Permian (Sakmarian); Japan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details] Taxonomic remark Ueno (2022) redescribed the genus Kwantoella. We agree that Kwantoella has more affinity with the schwagerinids than with...
Taxonomic remark Ueno (2022) redescribed the genus Kwantoella. We agree that Kwantoella has more affinity with the schwagerinids than with the schubertellids where it was earlier classified (Ueno, 2022). Kwantoella is included in the Chusenellinae in the present classification rather than in the Triticitinae because of the absence of strong chomata, the moderate axial fillings limited to the median part of the test and the absence of strong septal folding. [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Kwantoella Sakagami & Omata, 1957 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=721768 on 2025-05-21
Date action by
original description
Sakagami, S.; Omata, T. (1957). Lower Permian fusulinids from Shiraiwa, northwestern part of Ome, Nishitama-gun, Tokyo-to, Japan. <em>日本地質學地理學輯報 - Japanese journal of geology and geography.</em> 28: 247-264.
page(s): p. 251 [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]redescription Ueno, K. (2022). Carboniferous fusuline Foraminifera: taxonomy, regional biostratigraphy, and palaeobiogeographic faunal development. <em>Geological Society, London, Special Publications.</em> 512(1): 327-496 [first online 2021]., available online at https://doi.org/10.1144/sp512-2021-107 [details] Available for editors [request]From editor or global species database
Description Revised diagnosis. Small, elongate fusiform to cylindrical schwagerinid genus with relatively small proloculus, and compactly coiled inner volutions and outer relatively loosely coiled ones. Wall thin and consist of a tectum and lower less dense layer in the inner volutions and of a tectum and fine keriotheca in the outer ones. Septa thin and weakly fluted in the axial regions. Weak axial fillings observed only in the inner volutions. Low chomata present throughout growth.Distribution and age. Panthalassan mid-oceanic seamounts (Shiraiwa, Yayamadake, and probably Akiyoshi limestones, SW Japan); Indochina (Vietnam). Late Gzhelian to early (earliest?) Permian. (Ueno (2022)). [details] Diagnosis Test small, elongate fusiform, axis of coiling straight, septa numerous, straight and unfluted in the central part of the test but may be fluted toward the poles; wall of two layers, a tectum and less dense lower layer or keriotheca, tunnel single, chomata poorly developed, axial fillings restricted to the polar regions of the early whorls but more extensive in later whorls. L. Permian (Sakmarian); Japan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details] Taxonomic remark Ueno (2022) redescribed the genus Kwantoella. We agree that Kwantoella has more affinity with the schwagerinids than with the schubertellids where it was earlier classified (Ueno, 2022). Kwantoella is included in the Chusenellinae in the present classification rather than in the Triticitinae because of the absence of strong chomata, the moderate axial fillings limited to the median part of the test and the absence of strong septal folding. [details] |
