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Alegret, Ortiz & Kaminski (eds.), 2012. Ninth International Workshop on Agglutinated Foraminifera, Abstract Volume
A molecular comparison of Entzia tetrastomella and Jadammina macrescens
Maria HOLZMANN 1 , Michael A. KAMINSKI 2 , Sorin FILIPESCU 3 and Jan
PAWLOWSKI 1
1 Department of Genetics and Evolution, University of Geneva, 30, Quai Ernest Ansermet, 1211
Geneva 4, Switzerland.
2 Earth Sciences department, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi
Arabia.
3 Department of Geology, Babeş-Bolyai University, M. Kogălniceanu 1, 400084, Cluj Napoca,
Romania.
e-mail: maria.holzmann@unige.ch
The genus Entzia has first been described from Transylvanian salt marshes more than 120
years ago (Daday, 1884). The only species contained in this genus, Entzia tetrastomella
resembles the agglutinated foraminifer Jadammina macrescens (Brady). Loeblich and Tappan
(1987) recognized Entzia as a valid genus, close to Jadammina. Based on recent
morphological investigations of Entzia sampled from Romanian salt marshes in Turda by
Filipescu and Kaminski (2011), the genus Entzia has been regarded as the senior synonym of
Jadammina.
A molecular investigation of Entzia based on partial SSU rDNA sequences reveals that
specimens of Entzia are genetically more or less identical to Jadammina macrescens sampled
from Dovey Estuary. Our molecular results therefore confirm previous morphological
investigations, suggesting synonymy of the two genera.
References:
Filipescu, S. & Kaminski, M.A. 2011. Re-discovering Entzia, an agglutinated foraminifer from the
Transylvanian salt marshes. In: Kaminski, M.A. & Filipescu, S. (eds.), Proceedings of the Eighth
International Workshop on Agglutinated Foraminifera. Grzybowski Foundation Special
Publication 16, pp. 29-35.
Loeblich, A.R. & Tappan, H. 1987. Foraminiferal Genera and Their Classification. Van Nostrand
Reinhold Co., 970 pp., New York.
Von Daday, E. 1884. On a polythalamian from the salt-pools near Déva in Transylvania. The Annales
and Magazine of Natural History, 83: 349-363.
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