Lophophaena sp. I

Trubovitz, Sarah, Renaudie, Johan, Lazarus, David & Noble, Paula, 2022, Late Neogene Lophophaenidae (Nassellaria, Radiolaria) from the eastern equatorial Pacific, Zootaxa 5160 (1), pp. 1-158 : 71

Lophophaena sp. I

Plate 19, Figs. 8A – 10 .

unknown plagonid group C sp 55, Trubovitz et al., 2020, supplementary data 7.

Remarks. This species has a large, bulbous cephalis, that has very small pores and no spines beyond a muted apical spine. It has a distinctive, strongly-shouldered thorax with small appendages extending from the dorsal and lateral spines, with a bulging area between them. This species differs from Amphiplecta jorogumoae n. sp. (pl. 4, figs. 1A–11) in that the cephalis is rounded and smooth at the top rather than flat with a crown of short spines.

Material examined. 17 specimens observed from samples 321-1337A-16H- 6, 121–124cm (Late Miocene), 321-1337A-14H-7, 39–42cm (Late Miocene), 321-1337A-12H-5, 23–26cm (Late Miocene), 321-1337A-10H-2, 91–94cm (Early Pliocene), 321-1337A-7H- 6, 104–107cm (Early Pliocene), 321-1337A-6H-3, 29–32cm (Late Pliocene), 321-1337A-5H-5, 11–14cm (Late Pliocene), and 321-1337A-4H-2, 16–19cm (Middle Pleistocene).

Range. Upper Late Miocene—Pleistocene, EEP ( Table 1 ).

Figures

FIGURE 8. Internal skeletal structure of Botryopera amabie n. sp.

FIGURE 10. Internal skeletal structure of Lithomelissa alkonost n. sp.