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1 December 2009 Galeacysta etrusca Complex: Dinoflagellate Cyst Marker of Paratethyan Influxes to the Mediterranean Sea before and After the Peak of the Messinian Salinity Crisis
Speranta-Maria Popescu, Florent Dalesme, Gwénaël Jouannic, Gilles Escarguel, Martin J. Head, Mihaela Carmen Melinte-Dobrinescu, Mária Sütö-Szentai, Koraljka Bakrac, Georges Clauzon, Jean-Pierre Suc
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Abstract

More than one thousand specimens of a morphological complex including Galeacysta etrusca Corradini & Biffi 1988 from 11 Upper Miocene and Lower Pliocene localities of the Paratethyan and Mediterranean realms have been studied using a biometric approach in part relating to the degree of separation between endocyst and ectocyst. Four stable biometric groups have been distinguished statistically, the occurrence or prevalence of which appears closely linked to environmental conditions irrespective of the realm. Group ‘a’ is related to brackish conditions, group ‘b’ to marine conditions, group ‘c’ to freshwater, and group ‘d’ to high nutrient levels. Based on an accurate chronology provided by calcareous nannoplankton bioevents and recognition of the Messinian Erosional Surface, this study reveals:

Based on field observations and dinoflagellate cyst data, we propose that the reflooding of the Mediterranean Basin by Atlantic waters occurred at ca. 5.46 Ma, about 130 kyr before the Zanclean GSSP (5.332 Ma).

© 2009 by AASP Foundation
Speranta-Maria Popescu, Florent Dalesme, Gwénaël Jouannic, Gilles Escarguel, Martin J. Head, Mihaela Carmen Melinte-Dobrinescu, Mária Sütö-Szentai, Koraljka Bakrac, Georges Clauzon, and Jean-Pierre Suc "Galeacysta etrusca Complex: Dinoflagellate Cyst Marker of Paratethyan Influxes to the Mediterranean Sea before and After the Peak of the Messinian Salinity Crisis," Palynology 33(2), 105-134, (1 December 2009). https://doi.org/10.2113/gspalynol.33.2.105
Published: 1 December 2009
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KEYWORDS
‘Lago Mare’
Galeacysta etrusca complex
Messinian
Paratethys—Mediterranean
Zanclean
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