Ceratocyrtis sp. A

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 : 34-35

Ceratocyrtis sp. A

Plate 10, Figs 5A – 6B .

Ceratocyrtis sp 2 , Trubovitz et al., 2020, supplementary data 7.

Remarks. This species has a smooth shell surface that has three small lobes surrounding the cephalis. Furrows between lobes are associated with the dorsal and lateral spines, which become incorporated into the thorax. The concept of this species is poorly defined and in need of additional study; it may be a group containing multiple species.

Material examined. 92 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), 321-1337A-4H-6, 115–118cm (Early Pleistocene), 321-1337A-4H-2, 16–19cm (Middle Pleistocene), 321-1337A-3H-2, 103–106cm (Middle Pleistocene), 321-1337A-2H-3, 76– 79cm (Late Pleistocene), and 321-1337D-1H-1, 0–3cm (Recent).

Range. Late Miocene—Recent in the EEP ( Table 1 ).

Figures

FIGURE 5. Internal skeletal structure of Amphiplecta acrostoma Haeckel, 1887.

FIGURE 6. Internal skeletal structure of Arachnocorallium calvata (Haeckel, 1887) Petrushevskaya, 1971.