%0 Journal Article %K biostratigraphy %K Calcareous nannofossils %K Helicosphaera inversa %K paleobiogeography %K paleoecology %K Pleistocene %B Marine Micropaleontology %D 2013 %P 14\textendash24 %R 10.1016/j.marmicro.2013.08.001 %T Marine Micropaleontology A paleoecological and paleobiogeographic evaluation of Helicosphaera inversa ( Gartner ) Theodoridis and the diachrony of its First Occurrence %U http://dx.doi.org/10.1016/j.marmicro.2013.08.001 %V 104