Foraminifera taxon details
Darvasitinae Leven, 1992 †
1061573 (urn:lsid:marinespecies.org:taxname:1061573)
accepted
Subfamily
marine, fresh, terrestrial
fossil only
Leven, E. J. (1992). Fusulinids. In: Пермь Дарваз-Заалайской Зоны Памира: Фужулинидий, Аммоноидеи, Стратиграфия - Perm' Darvaz-Zaalayskoy zony Pamira: fusulinidy, ammonoidei, stratigrafiya. <em>Труды Палеонтологического Института - Rossiyskaya Akademiya Nauk, Trudy Paleontologicheskogo Instituta.</em> 253: 64-109., available online at http://www.geokniga.org/books/14217
page(s): p. 84; note: Darvasitidae [details] Available for editors
[request]
Ueno, K.; Shintani, T.; Tazawa, J. -i. (2011). A fusuline fauna from the basal part of the Sakamotozawa Formation in the Kamiyasse area, South Kitakami Belt, Northeast Japan. <em>Science Reports, Niigata University (Geology).</em> 26: 23-41., available online at https://niigata-u.repo.nii.ac.jp/records/6836
page(s): p. 35; note: Nomen translatum. [details] Available for editors [request]
page(s): p. 84; note: Darvasitidae [details] Available for editors
[request]Ueno, K.; Shintani, T.; Tazawa, J. -i. (2011). A fusuline fauna from the basal part of the Sakamotozawa Formation in the Kamiyasse area, South Kitakami Belt, Northeast Japan. <em>Science Reports, Niigata University (Geology).</em> 26: 23-41., available online at https://niigata-u.repo.nii.ac.jp/records/6836
page(s): p. 35; note: Nomen translatum. [details] Available for editors
[request]
Description Test small to medium in size, from oval to subcylindrical, less often pseudofusiform, usually with smoothly rounded ends....
Description Test small to medium in size, from oval to subcylindrical, less often pseudofusiform, usually with smoothly rounded ends. The shape of the test is established in the early whorls and remains almost unchanged; the test only slightly lengthens as it grows. The spiral is wound closely and evenly with a very smooth and slow increase in the height of volutions. The initial chamber is small and medium in size. The wall has a distinct keriotheca, moderate, gradually increasing thickness. The septa are folded along their entire length. The folding covers only their lower edge, so the arches are usually flat and low. Cuniculi are observed in the outer whorls. The aperture occupies a stable position gradually and rapidly expanding. The septa along the edges of the aperture are thickened by secondary deposits, which can also accumulate in the axial part of the test.
(Vachard and Le Coze (2024)). [details]
(Vachard and Le Coze (2024)). [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Darvasitinae Leven, 1992 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=1061573 on 2025-05-21
Date
action
by
original description
Leven, E. J. (1992). Fusulinids. In: Пермь Дарваз-Заалайской Зоны Памира: Фужулинидий, Аммоноидеи, Стратиграфия - Perm' Darvaz-Zaalayskoy zony Pamira: fusulinidy, ammonoidei, stratigrafiya. <em>Труды Палеонтологического Института - Rossiyskaya Akademiya Nauk, Trudy Paleontologicheskogo Instituta.</em> 253: 64-109., available online at http://www.geokniga.org/books/14217
page(s): p. 84; note: Darvasitidae [details] Available for editors [request]
original description Ueno, K.; Shintani, T.; Tazawa, J. -i. (2011). A fusuline fauna from the basal part of the Sakamotozawa Formation in the Kamiyasse area, South Kitakami Belt, Northeast Japan. <em>Science Reports, Niigata University (Geology).</em> 26: 23-41., available online at https://niigata-u.repo.nii.ac.jp/records/6836
page(s): p. 35; note: Nomen translatum. [details] Available for editors [request]
page(s): p. 84; note: Darvasitidae [details] Available for editors
[request]original description Ueno, K.; Shintani, T.; Tazawa, J. -i. (2011). A fusuline fauna from the basal part of the Sakamotozawa Formation in the Kamiyasse area, South Kitakami Belt, Northeast Japan. <em>Science Reports, Niigata University (Geology).</em> 26: 23-41., available online at https://niigata-u.repo.nii.ac.jp/records/6836
page(s): p. 35; note: Nomen translatum. [details] Available for editors
[request]From editor or global species database
Description Test small to medium in size, from oval to subcylindrical, less often pseudofusiform, usually with smoothly rounded ends. The shape of the test is established in the early whorls and remains almost unchanged; the test only slightly lengthens as it grows. The spiral is wound closely and evenly with a very smooth and slow increase in the height of volutions. The initial chamber is small and medium in size. The wall has a distinct keriotheca, moderate, gradually increasing thickness. The septa are folded along their entire length. The folding covers only their lower edge, so the arches are usually flat and low. Cuniculi are observed in the outer whorls. The aperture occupies a stable position gradually and rapidly expanding. The septa along the edges of the aperture are thickened by secondary deposits, which can also accumulate in the axial part of the test.(Vachard and Le Coze (2024)). [details]
