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A new species of Marginella Lamarck, 1799 is described from the Early Pleistocene of the Messina Strait\udarea, M. seguenzai n. sp. The remarkable variability in shell size and shape required a preliminary morphometric\udanalysis, which provided evidence of a single species. This is the last known representative of\udthe genus Marginella in the Mediterranean, today highly diverse in the tropical and subtropical shallow\udwaters of West Africa, up to about 28°N. The genus Marginella was thought to have disappeared from\udthe Mediterranean and the adjacent Atlantic after the Early Pliocene, due to early cooling phases. Anyway,\udMarginella seguenzai n. sp. was a deep water species, and its extinction was most probably due to\udthe loss of psychrosphere, in the Early Pleistocene, rather than to climatic deterioration. The remarkable\udcloseness between the new species and a deep water living species, endemic to three seamounts in the\udNE Atlantic, suggests a common origin for both species. High productivity seems to have been a key\udfactor in the Mediterranean distribution of Marginella, either in shallow and deep waters

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On the Last Occurrence of<i>Marginella</i>Lamarck, 1799 (Gastropoda, Marginellidae) in the Mediterranean: Description of a New Species from the Early Pleistocene and Paleoceanographic Implications

On the Last Occurrence ofMarginellaLamarck, 1799 (Gastropoda, Marginellidae) in the Mediterranean: Description of a New Species from the Early Pleistocene and Paleoceanographic Implications