Foraminifera taxon details
Toriyamaia Kanmera, 1956 †
721765 (urn:lsid:marinespecies.org:taxname:721765)
accepted
Genus
Toriyamaia laxiseptata Kanmera, 1956 † (type by original designation)
- Species Toriyamaia americana Stewart, 1966 †
- Species Toriyamaia congeneris Da in Da & Sun, 1983 †
- Species Toriyamaia ellipsoidalis Sheng & Sun, 1975 †
- Species Toriyamaia elliptica Li, 1986 †
- Species Toriyamaia laxa Han, 1980 †
- Species Toriyamaia laxiseptata Kanmera, 1956 †
- Species Toriyamaia longa Leven, 1992 †
- Species Toriyamaia minima Han, 1976 †
- Species Toriyamaia zweikofelica Davydov, 2013 †
- Species Toriyamaia provecta Wang & Sun, 1973 † accepted as Biwaella provecta (Wang & Sun, 1973) † (unaccepted > superseded combination, Opinion of Zhang and Dong in Xiao et al. (1986))
marine, brackish, fresh, terrestrial
fossil only
feminine
Kanmera, K. (1956). Toriyamaia, a new Permian fusulinid genus from the Kuma massif, Kyushu, Japan. <em>Transactions and Proceedings of the Palaeontological Society of Japan. New Series.</em> 24: 251–257., available online at https://doi.org/10.14825/prpsj1951.1956.24_251
page(s): p. 251 [details] Available for editors
[request]
page(s): p. 251 [details] Available for editors
[request]
Description Description: Test involute, elongate fusiform, asymmetrical, with a juvenarium weakly deviated, and adult stages loosely...
Diagnosis Test small, elongate fusiform to subcylindrical, broadly rounded at the poles, small rounded proloculus, early whorls...
Description Description: Test involute, elongate fusiform, asymmetrical, with a juvenarium weakly deviated, and adult stages loosely coiled. Planar septa only gently curved in the polar areas. Typical wall of schubertellid with primatheca. Chomata more distinct than in Schubertella.
Occurrence: ?Sakmarian–Artinskian–Kungurian–early Middle Permian; Tethys and Panthalassa; very rare in the USA (Texas; Stewart, 1966).
(Vachard in Krainer et al. (2019)). [details]
Occurrence: ?Sakmarian–Artinskian–Kungurian–early Middle Permian; Tethys and Panthalassa; very rare in the USA (Texas; Stewart, 1966).
(Vachard in Krainer et al. (2019)). [details]
Diagnosis Test small, elongate fusiform to subcylindrical, broadly rounded at the poles, small rounded proloculus, early whorls...
Diagnosis Test small, elongate fusiform to subcylindrical, broadly rounded at the poles, small rounded proloculus, early whorls discoidal and first whorl evolute, later whorls subcylindrical, involute, increasing rapidly in height, with coiling axis perpendicular to that of the early stage, septa sparse, widely separated, unfluted, resembles Rauserella but does not develop the later irregular coiling; wall thin, with tectum and less dense structureless lower layer. L. Permian; Japan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Toriyamaia Kanmera, 1956 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=721765 on 2026-04-17
Date
action
by
original description
Kanmera, K. (1956). Toriyamaia, a new Permian fusulinid genus from the Kuma massif, Kyushu, Japan. <em>Transactions and Proceedings of the Palaeontological Society of Japan. New Series.</em> 24: 251–257., available online at https://doi.org/10.14825/prpsj1951.1956.24_251
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]
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]From editor or global species database
Description Description: Test involute, elongate fusiform, asymmetrical, with a juvenarium weakly deviated, and adult stages loosely coiled. Planar septa only gently curved in the polar areas. Typical wall of schubertellid with primatheca. Chomata more distinct than in Schubertella.Occurrence: ?Sakmarian–Artinskian–Kungurian–early Middle Permian; Tethys and Panthalassa; very rare in the USA (Texas; Stewart, 1966).
(Vachard in Krainer et al. (2019)). [details]
Diagnosis Test small, elongate fusiform to subcylindrical, broadly rounded at the poles, small rounded proloculus, early whorls discoidal and first whorl evolute, later whorls subcylindrical, involute, increasing rapidly in height, with coiling axis perpendicular to that of the early stage, septa sparse, widely separated, unfluted, resembles Rauserella but does not develop the later irregular coiling; wall thin, with tectum and less dense structureless lower layer. L. Permian; Japan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
Image from typetaxon