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Foraminifera taxon detailsBiconcava brattiana Schlagintweit, Cvetko Tešović, Martinuš & Vlahović, 2023 †
1672902 (urn:lsid:marinespecies.org:taxname:1672902)
accepted
Species
marine,
fossil only
Schlagintweit, F., Cvetko Tešović, B., Martinuš, M., Vlahović, I. (2023). New larger benthic foraminifera from Brač Island, Croatia: further evidence for early–middle Campanian foraminiferan high diversity in the inner platform facies of the Adriatic Carbonate Platform. <em>Cretaceous Research, 151.</em> , available online at https://doi.org/10.1016/j.cretres.2023.105667 [details] Available for editors
 [request]
Description Test lenticular, planispirally coiled with up to three and a half whorls, compressed and biumbilicate; periphery subacute....
Description Test lenticular, planispirally coiled with up to three and a half whorls, compressed and biumbilicate; periphery subacute. The greatest observed test diameter is about 0.6 mm. The ratio of compression (ratio test diameter vs. width) is about 2.7-3.7. There are nine chambers in the first, ~14 chambers in the second whorl, and 16 to 17 chambers in the third whorl. The subspherical proloculus has a diameter of ~0.05mm-0.07 mm. The chamber height is increasing continuously and is greater than the chamber diameter. In the last whorl, the chamber height is about twice the width in equatorial sections. In equatorial sections, the outer test periphery exhibits ribs at the chamber sutures. In axial sections, the chamber lumen is V-shaped. Septa and wall are dark and homogeneous (imperforate, finely agglutinated), with no agglutinated grains observable. The thickness of the septa is greater than the thickness of the outer wall. [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Biconcava brattiana Schlagintweit, Cvetko Tešovic, Martinuš & Vlahovic, 2023 †. Accessed at: https://www.marinespecies.org/Foraminifera/aphia.php?p=taxdetails&id=1672902 on 2025-05-21
Date action by
original description
Schlagintweit, F., Cvetko Tešović, B., Martinuš, M., Vlahović, I. (2023). New larger benthic foraminifera from Brač Island, Croatia: further evidence for early–middle Campanian foraminiferan high diversity in the inner platform facies of the Adriatic Carbonate Platform. <em>Cretaceous Research, 151.</em> , available online at https://doi.org/10.1016/j.cretres.2023.105667 [details] Available for editors
[request]From editor or global species database
Description Test lenticular, planispirally coiled with up to three and a half whorls, compressed and biumbilicate; periphery subacute. The greatest observed test diameter is about 0.6 mm. The ratio of compression (ratio test diameter vs. width) is about 2.7-3.7. There are nine chambers in the first, ~14 chambers in the second whorl, and 16 to 17 chambers in the third whorl. The subspherical proloculus has a diameter of ~0.05mm-0.07 mm. The chamber height is increasing continuously and is greater than the chamber diameter. In the last whorl, the chamber height is about twice the width in equatorial sections. In equatorial sections, the outer test periphery exhibits ribs at the chamber sutures. In axial sections, the chamber lumen is V-shaped. Septa and wall are dark and homogeneous (imperforate, finely agglutinated), with no agglutinated grains observable. The thickness of the septa is greater than the thickness of the outer wall. [details]
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