Cenozoic Spumellarian Radiolaria With Eccentric Microsphere Author Dumitrica, Paulian Institute of Earth Sciences, Université de Lausanne, Géopolis, 1015 Lausanne, Switzerland; mailing address: Dennigkofenweg 33, 3073 Gümligen, Switzerland Paulian.Dumitrica@unil.ch text Acta Palaeontologica Romaniae 2019 2019-04-25 15 1 39 60 http://dx.doi.org/10.35463/j.apr.2019.01.04 journal article 10.35463/j.apr.2019.01.04 1842-371x 10520604 57C54916-CC13-4BA1-BA82-2A99A822D9D1 Genus Excentrococcus Dumitrică, 1978 Type species . Excentrococcus annulatus Dumitrică, 1978 . Diagnosis . Test flat, disc-shaped with an eccentric microsphere in an outer medullary shell. Medullary shell surrounded by 2-6 circular or oval latticed rings. Remarks . This genus resembles the genus Flustrella Ehrenberg from which it differs in having the microsphere eccentric in the second shell. Range . Middle Miocene to Recent so far known.