Foraminifera taxon details
Demirina Özcan, 1994 †
738420 (urn:lsid:marinespecies.org:taxname:738420)
accepted
Genus
Demirina meridionalis Özcan, 1994 † (type by original designation)
marine, brackish, fresh, terrestrial
fossil only
feminine
Özcan, E. (1994). Demirina meridionalis n. gen., n. sp., a new Cenomanian agglutinated foraminifera from southeastern Turkey. <em>Revue de Paléobiologie.</em> 13: 1-7.
page(s): p. 13 [details] Available for editors
[request]
page(s): p. 13 [details] Available for editors
[request]
Description Emended diagnosis: Test planispirally coiled, biumbilicate with a (sub)acute margin. Chambers...
Taxonomic remark Remarks: Originally (Özcan, 1994), Demirina was placed into the Nezzazatidae, respectively the subfamily ...
Description Emended diagnosis: Test planispirally coiled, biumbilicate with a (sub)acute margin. Chambers low, rapidly increasing in length and width and slowly but continuously in height, partially subdivided by one short horizontal partition (rafter) and one (up to 2?) order of vertical partitions (beams), forming a coarse subepidermal network. The main vertical partitions are generally aligned between subsequent chambers; they may become discontinuous when a new partition is added as a result of chamber enlargement during ontogeny. Axial section of the adult stage of growth shows axially compressed (biumbilicate) shell and chambers of oval outline, often characteristic diamond shaped. Last chambers have tendency to uncoil. The apertural face of the uncoiled stage is flat. Foramina are single and interiomarginal, becoming cribrate in the very final (uncoiling?) chambers. Wall finely agglutinated and non-canaliculate.
(Piuz and Schlagintweit (2025)). [details]
(Piuz and Schlagintweit (2025)). [details]
Taxonomic remark Remarks: Originally (Özcan, 1994), Demirina was placed into the Nezzazatidae, respectively the subfamily ...
Taxonomic remark Remarks: Originally (Özcan, 1994), Demirina was placed into the Nezzazatidae, respectively the subfamily Coxitinae Hamaoui and Saint-Marc, as followed by subsequent workers (Kaminski, 2000, 2014; Simmons and Bidgood, 2023; Simmons et al., 2025a). The planispiral test, the presence of a single rafter per chamber, beams generally aligned between subsequent chambers both forming a subepidermal network, and the lack of any septal plate looks incompatible with the features designated for the suborder Nezzazatina Kaminski, 2004 respectively the family Nezzazatidae Hamaoui and Saint-Marc, 1970 (e.g., Simmons et al., 2025a). Instead, the observed test features suggest transfer to the order Loftusiida Kaminski and Mikhalevich in Kaminski (2004), and the family Spirocyclinidae Munier-Chalmas, 1887.
(Piuz and Schlagintweit (2025)). [details]
(Piuz and Schlagintweit (2025)). [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Demirina Özcan, 1994 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=738420 on 2026-04-05
Date
action
by
original description
Özcan, E. (1994). Demirina meridionalis n. gen., n. sp., a new Cenomanian agglutinated foraminifera from southeastern Turkey. <em>Revue de Paléobiologie.</em> 13: 1-7.
page(s): p. 13 [details] Available for editors [request]
redescription Piuz, A.; Schlagintweit, F. (2025). Demirina meridionalis Özcan, 1994, Cenomanian larger benthic foraminifera from the Natih Formation of Oman: First record outside the type area and emendation of the genus. <em>Journal of Mediterranean Earth Sciences.</em> 17: 43-54., available online at https://doi.org/10.13133/2280-6148/19076 [details] Available for editors [request]
page(s): p. 13 [details] Available for editors
[request]redescription Piuz, A.; Schlagintweit, F. (2025). Demirina meridionalis Özcan, 1994, Cenomanian larger benthic foraminifera from the Natih Formation of Oman: First record outside the type area and emendation of the genus. <em>Journal of Mediterranean Earth Sciences.</em> 17: 43-54., available online at https://doi.org/10.13133/2280-6148/19076 [details] Available for editors
[request]From editor or global species database
Description Emended diagnosis: Test planispirally coiled, biumbilicate with a (sub)acute margin. Chambers low, rapidly increasing in length and width and slowly but continuously in height, partially subdivided by one short horizontal partition (rafter) and one (up to 2?) order of vertical partitions (beams), forming a coarse subepidermal network. The main vertical partitions are generally aligned between subsequent chambers; they may become discontinuous when a new partition is added as a result of chamber enlargement during ontogeny. Axial section of the adult stage of growth shows axially compressed (biumbilicate) shell and chambers of oval outline, often characteristic diamond shaped. Last chambers have tendency to uncoil. The apertural face of the uncoiled stage is flat. Foramina are single and interiomarginal, becoming cribrate in the very final (uncoiling?) chambers. Wall finely agglutinated and non-canaliculate.(Piuz and Schlagintweit (2025)). [details]
Taxonomic remark Remarks: Originally (Özcan, 1994), Demirina was placed into the Nezzazatidae, respectively the subfamily Coxitinae Hamaoui and Saint-Marc, as followed by subsequent workers (Kaminski, 2000, 2014; Simmons and Bidgood, 2023; Simmons et al., 2025a). The planispiral test, the presence of a single rafter per chamber, beams generally aligned between subsequent chambers both forming a subepidermal network, and the lack of any septal plate looks incompatible with the features designated for the suborder Nezzazatina Kaminski, 2004 respectively the family Nezzazatidae Hamaoui and Saint-Marc, 1970 (e.g., Simmons et al., 2025a). Instead, the observed test features suggest transfer to the order Loftusiida Kaminski and Mikhalevich in Kaminski (2004), and the family Spirocyclinidae Munier-Chalmas, 1887.
(Piuz and Schlagintweit (2025)). [details]
From editor or global species database
Image from typetaxon