Botryopera sp. B

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 : 28-29

Botryopera sp. B

Plate 8, Figs. 7A – 8 .

Remarks. The pore structure and segment dimensions are nearly identical to Botryopera sp. A (Pl. 6, Figs. 7A – 9B ), but this species differs in that it has a horn on the top of the cephalis that is not related to the apical spine. This characteristic also distinguishes Botryopera sp. B from Botryopera amabie n. sp. (Pl. 7, Figs. 1A – 6 ). The horn on the cephalis is conical and relatively large, approximately the length of the cephalis itself.

Material examined. 2 specimens observed from samples 321-1337D-30H- 3, 103–104cm (Middle Miocene), and 321-1337D-26H-3W, 142–144cm (Late Miocene).

Range. Middle–Late Miocene in the EEP ( Table 1 ).

Figures

FIGURE 1. Diagram illustrating the general skeletal morphology of Lophophaenidae, and terminology used in this manuscript. Dashed lines indicate spines that are not visible from the angle shown, as they extend into the skeleton. An example specimen of Lophophaena casperi n. sp. is included for comparison to the diagrams.

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

FIGURE 7. Internal skeletal structure of Arachnocorys umbellifera (Haeckel, 1862) Petrushevskaya, 1971.

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

FIGURE 9. Internal skeletal structure of Ceratocyrtis sp. C.