Foraminifera taxon details
Hayasakaina Fujimoto & Kawada, 1953 †
721869 (urn:lsid:marinespecies.org:taxname:721869)
accepted
Genus
Hayasakaina kotakiensis Fujimoto & Kawada, 1953 † (type by original designation)
marine, brackish, fresh, terrestrial
fossil only
Fujimoto, H.; Kawada, S. (1953). Hayasakaina, a new genus of fusulinids from the Omi-Limestone, Niigata Prefecture, Japan. <em>Science Reports of the Tokyo Bunrika Daigaku, section C.</em> 2(13): 207-209.
page(s): p. 207 [details]
page(s): p. 207 [details]
Description Diagnosis: Nankinellid with relatively few whorls, high chambers and smooth carinate periphery, often taphonomically...
Diagnosis Test small, up to 2 mm in maximum diameter, with subangular to slightly rounded periphery, tiny proloculus followed by up...
Description Diagnosis: Nankinellid with relatively few whorls, high chambers and smooth carinate periphery, often taphonomically abraded with last wall lacking. Chomata weak to absent.
Range and distribution: Artinskian to late Capitanian (Kobayashi 1988; Kobayashi 2007), probably Tethyan and Panthalassan. Discovered in the Changhsingian of the northwestern Dolomites (South Tyrol, Italy).
(Vachard and Krainer (2022)). [details]
Range and distribution: Artinskian to late Capitanian (Kobayashi 1988; Kobayashi 2007), probably Tethyan and Panthalassan. Discovered in the Changhsingian of the northwestern Dolomites (South Tyrol, Italy).
(Vachard and Krainer (2022)). [details]
Diagnosis Test small, up to 2 mm in maximum diameter, with subangular to slightly rounded periphery, tiny proloculus followed by up...
Diagnosis Test small, up to 2 mm in maximum diameter, with subangular to slightly rounded periphery, tiny proloculus followed by up to nine volutions, inner six to seven volutions planispiral and with short axis of coiling, outer two to three volutions with coiling axis perpendicular to the earlier axis, septa numerous, plane, at right angles to the periphery; wall thin, of tectum and less dense upper and lower tectoria, tunnel single, chomata developed throughout the inner whorls. L. Permian (Artinskian); Japan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Hayasakaina Fujimoto & Kawada, 1953 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=721869 on 2026-06-07
Date
action
by
original description
Fujimoto, H.; Kawada, S. (1953). Hayasakaina, a new genus of fusulinids from the Omi-Limestone, Niigata Prefecture, Japan. <em>Science Reports of the Tokyo Bunrika Daigaku, section C.</em> 2(13): 207-209.
page(s): p. 207 [details]
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. 207 [details]
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 Diagnosis: Nankinellid with relatively few whorls, high chambers and smooth carinate periphery, often taphonomically abraded with last wall lacking. Chomata weak to absent.Range and distribution: Artinskian to late Capitanian (Kobayashi 1988; Kobayashi 2007), probably Tethyan and Panthalassan. Discovered in the Changhsingian of the northwestern Dolomites (South Tyrol, Italy).
(Vachard and Krainer (2022)). [details]
Diagnosis Test small, up to 2 mm in maximum diameter, with subangular to slightly rounded periphery, tiny proloculus followed by up to nine volutions, inner six to seven volutions planispiral and with short axis of coiling, outer two to three volutions with coiling axis perpendicular to the earlier axis, septa numerous, plane, at right angles to the periphery; wall thin, of tectum and less dense upper and lower tectoria, tunnel single, chomata developed throughout the inner whorls. L. Permian (Artinskian); Japan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
Image from typetaxon