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 Helioferrusa nov. gen. Type species. Helioferrusa hollandei nov. gen., nov. sp. Diagnosis . Skeleton of Heliodiscus type but bearing a peripheral porous ring instead of spines. Microsphere eccentric in the outer medullary shell. Etymology . The generic name comes from the Greek helios – Sun and Odette Ferru who illustrated the radiolarian species from the monograph by Hollande & Enjumet (1960) with wonderful drawings similar in quality to those made by Adolf Giltsch for Haeckel’s 1887 monograph. Feminine gender. Remarks . This genus resembles a Coccodiscus Haeckel from which it differs in having a double medullary shell with eccentric microsphere and originated very probably in Heliodiscus riedeli nov. sp. with which its cortical shell resembles very well and with which it co-occurs in the late middle Miocene assemblage from sample PROA 96P. Range and occurrence . Late middle Miocene so far as known.