Lophophaena cylindrica ( Cleve, 1900 ) Petrushevskaya, 1971

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 : 55

publication ID

https://doi.org/ 10.11646/zootaxa.5160.1.1

publication LSID

lsid:zoobank.org:pub:A9179C79-EE43-44E4-8723-919505500049

DOI

https://doi.org/10.5281/zenodo.10551526

persistent identifier

https://treatment.plazi.org/id/03C96F50-FFA5-FFCE-75DF-E176FD1FC405

treatment provided by

Plazi (2022-07-04 09:53:10, last updated 2024-01-22 15:26:06)

scientific name

Lophophaena cylindrica ( Cleve, 1900 ) Petrushevskaya, 1971
status

 

Lophophaena cylindrica ( Cleve, 1900) Petrushevskaya, 1971 View in CoL

Plate 22, Figs. 1A View FIGURE 1 – 4 View FIGURE 4 .

Dictyocephalus cylindricus n. sp., Cleve, 1900, p. 7, pl. 4, fig. 10.

Lophophaena cylindrica (Cleve) View in CoL , Petrushevskaya, 1971, p. 117, pl. 57, fig. 5; pl. 61, figs. 4–6.

non Lophophaena cylindrica Cleve, Renz, 1976 View in CoL , pl. 6, fig. 21.

Lophophaena cylindrica Cleve, Takahashi, 1991 View in CoL , pl. 25, fig. 3 (non figs. 4–5).

Lophophaena cylindrica Cleve, Hull, 1993 View in CoL , pl. 4, fig. 2.

Lophophaena cylindrica Cleve, Sashida and Kurihara, 1999 View in CoL , fig. 7.4.

unknown plagonid group C sp 30, Trubovitz et al., 2020, supplementary data 7.

Remarks. This species is close to Lophophaena hispida (Ehrenberg) Petrushevskaya (Pl. 22, Figs. 5–8B View FIGURE 5 View FIGURE 6 View FIGURE 7 View FIGURE 8 ), but differs in that pore size is consistent throughout the skeleton, whereas L. hispida has significantly larger pores on the cephalis. Well-preserved specimens of this species also tend to show an extra built-up layer of silica around the neck area, whereas L. hispida does not. The Lophophaena cylindrica specimen illustrated in Renz (1976), and some of the specimens illustrated in Takahashi (1991) appear to have large pores on the cephalis (although image quality is low), likely making these L. hispida specimens. There is significant variation in size within this species, including in our EEP material.

Range. Late Miocene—Recent, EEP ( Table 1 View TABLE 1 ).

Cleve, P. T. (1900) The plankton of the North Sea, the English Channel, and the Skagerak in 1898. Kongliga svenska Vetenskaps Akademiens Handlingar, 32 (8), 6 - 36.

Hull, D. M. (1993) Quaternary, Eocene, and Cretaceous radiolarians from the Hawaiian Arch, northern Equatorial Pacific Ocean. In: Wilkens, R. H., Bender, J. & Firth, J. V. (Eds.), Proceedings of the Ocean Drilling Program, Scientific Results. Vol. 136. U. S. Government Printing Office, Washington, D. C., pp. 3 - 25. https: // doi. org / 10.2973 / odp. proc. sr. 136.201.1993

Petrushevskaya, M. G. (1971) Nassellarian radiolarians in the plankton of the world oceans. Investigations of the Fauna of the Seas, 9 (17), 1 - 294. [in Russian]

Renz, G. W. (1976) The distribution and ecology of Radiolaria in the Central Pacific plankton and surface sediments. Bulletin of the Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, 22, 1 - 267.

Sashida, K. & Kurihara, T. (1999) Recent radiolarian faunas in the surface water off the coast of Shimoda, Izu Peninsula, Japan. Science Reports of the Institute of Geoscience, University of Tsukuba, Section B: Geological Sciences, 20, 115 - 144.

Takahashi, K. (1991) Radiolaria: flux, ecology, and taxonomy in the Pacific and Atlantic. Woods Hole Oceanographic Institution, Ocean Biocoenosis Series, 3, 1 - 301. https: // doi. org / 10.1575 / 1912 / 408

Trubovitz, S., Lazarus, D., Renaudie, J. & Noble, P. J. (2020) Marine plankton show threshold extinction response to Neogene climate change. Nature Communications, 11 (5069), 1 - 10. https: // doi. org / 10.1038 / s 41467 - 020 - 18879 - 7

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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.

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FIGURE 4. Examples of specimen measurements discussed in the Systematic Paleontology section of this study.

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

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

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

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

Kingdom

Chromista

Phylum

Radiozoa

Class

Polycystina

Order

Nassellaria

Family

Plagiacanthidae

Genus

Lophophaena