Botryopera 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 : 28

Botryopera sp. A

Plate 6, Figs. 7A – 9B .

Remarks. This species is similar to Botryopera amabie n. sp. (Pl. 7, Figs. 1A – 6 ) except that the cephalis is proportionally shorter and narrower, compared to the thorax dimensions. On average, the cephalis height is ~33 microns, rather than the 43 micron mean of B. amabie . The shoulders on the thorax are also more distinct, and the thorax tapers more dramatically, causing the shape to be less cylindrical in outline. The overall size is smaller than in B. amabie n. sp.

Material examined. 4 specimens observed from the following samples: 321-1337A-31X-6W, 4–6cm (Middle Miocene), 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 9. Internal skeletal structure of Ceratocyrtis sp. C.