Foraminifera taxon details

Biseriamminidae Chernysheva, 1941 †

720908  (urn:lsid:marinespecies.org:taxname:720908)

accepted
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marine, fresh, terrestrial
fossil only
Chernysheva, N. E. (1941). Новый род фораминифер из турнейских отложений Урала - A new genus of foraminifera from Tournaisian deposits of the Urals. <em>ДАН СССР - Reports of the Academy of Sciences USSR.</em> 32(1): 69-70.
page(s): p. 70 [details] Available for editors  PDF available [request]
Description Test free, biserially coiled to biseriate, with a few whorls and a few chambers increasing rapidly in height. An oral...  
Description Test free, biserially coiled to biseriate, with a few whorls and a few chambers increasing rapidly in height. An oral valvula near the aperture. Supplementary deposits absent or very rare. Supplementary chamberlets occasionally present. Wall unilayered dark microgranular or granular with calcareous agglutinate, or bilayered with an inner pseudofibrous layer. Aperture simple basal. Tournaisian–Visean.
(Vachard and Le Coze (2024)). [details]

Description Test biserially coiled. Initially streptospiral followed by a whorl expanding rapidly. Because of the coiling the shape of...  
Description Test biserially coiled. Initially streptospiral followed by a whorl expanding rapidly. Because of the coiling the shape of the chambers is very variable in sections. Sutures indistinct. No supplementary deposits. Aperture terminal cribrate. Wall differentiated with a tectum and an inner coarse layer with calcareous agglutinate.
Occurrence. Tournaisian–Visean; very poorly known but eventually cosmopolitan.
(Vachard and Le Coze (2022)).  [details]

Diagnosis Test biserial, with planispirally enrolled plane of biseriality or may uncoil in later stage; wall calcareous,...  
Diagnosis Test biserial, with planispirally enrolled plane of biseriality or may uncoil in later stage; wall calcareous, microgranular, may have more than one layer; aperture at inner border of apertural face. L. Carboniferous (Tournaisian) to U. Permian (Djulfian). (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Biseriamminidae Chernysheva, 1941 †. Accessed at: https://www.marinespecies.org/Foraminifera/aphia.php?p=taxdetails&id=720908 on 2025-11-15
Date
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2013-03-07 12:41:16Z
created
2018-01-25 10:18:05Z
changed

original description Chernysheva, N. E. (1941). Новый род фораминифер из турнейских отложений Урала - A new genus of foraminifera from Tournaisian deposits of the Urals. <em>ДАН СССР - Reports of the Academy of Sciences USSR.</em> 32(1): 69-70.
page(s): p. 70 [details] Available for editors  PDF available [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  PDF available [request]
From editor or global species database
Description Test free, biserially coiled to biseriate, with a few whorls and a few chambers increasing rapidly in height. An oral valvula near the aperture. Supplementary deposits absent or very rare. Supplementary chamberlets occasionally present. Wall unilayered dark microgranular or granular with calcareous agglutinate, or bilayered with an inner pseudofibrous layer. Aperture simple basal. Tournaisian–Visean.
(Vachard and Le Coze (2024)). [details]

Description Test biserially coiled. Initially streptospiral followed by a whorl expanding rapidly. Because of the coiling the shape of the chambers is very variable in sections. Sutures indistinct. No supplementary deposits. Aperture terminal cribrate. Wall differentiated with a tectum and an inner coarse layer with calcareous agglutinate.
Occurrence. Tournaisian–Visean; very poorly known but eventually cosmopolitan.
(Vachard and Le Coze (2022)).  [details]

Diagnosis Test biserial, with planispirally enrolled plane of biseriality or may uncoil in later stage; wall calcareous, microgranular, may have more than one layer; aperture at inner border of apertural face. L. Carboniferous (Tournaisian) to U. Permian (Djulfian). (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
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