Late Neogene Lophophaenidae (Nassellaria, Radiolaria) from the eastern equatorial Pacific Author Trubovitz, Sarah Author Renaudie, Johan Author Lazarus, David Author Noble, Paula text Zootaxa 2022 2022-07-04 5160 1 1 158 http://dx.doi.org/10.11646/zootaxa.5160.1.1 journal article 10.11646/zootaxa.5160.1.1 1175­5334 10544058 A9179C79-EE43-44E4-8723-919505500049 Ceratocyrtis sp. I group Plate. 14, Figs. 3A – 6B . Ceratocyrtis sp 7 cf, Trubovitz et al., 2020 , supplementary data 7. Remarks. This species group is unique for its relatively heavily silicified cephalis, and long, thin thorax with semiirregular pores that remain similar in size throughout the length of the thorax. It differs from C. cucullaris (Pl. 10, Fig. 1 ) in that the thorax does not flare as widely outward, and it has a relatively thin thorax wall. It differs from C. histricosus (Pl. 10, Figs. 2–3 ) in that it generally grows a much longer thorax, and the pores on the thorax do not substantially increase in size toward the bottom. We list this as a species group rather than a single species because the simple morphology and lack of constraint in morphological variability make it difficult to determine whether this is one species or multiple. Material examined. 10 specimens observed from Late Miocene samples 321-1337D-23H- 6, 134–137cm , 321- 1337A-18H-6, 77–80cm , and 321-1337A-16H- 6, 121–124cm . Range. Late Miocene in the EEP ( Table 1 ).