Pylodiscus spinulosus ( Chen and Tan, 1989 )

Zhang, Lanlan & Suzuki, Noritoshi, 2017, Taxonomy and species diversity of Holocene pylonioid radiolarians from surface sediments of the northeastern Indian Ocean, Palaeontologia Electronica (Cambridge, England: 2003) 7 (8), pp. 1-68 : 26-27

Pylodiscus spinulosus ( Chen and Tan, 1989)

Figure 15

1976 Hexapyle dodecantha Haeckel ; Renz, p. 113-114, pl. 1, fig. 11.

1987 Hexapyle spp. Dworetzky and Morley, pl. 2, fig. 2.

*1989 Hexapyle spinulosa Chen and Tan , p. 3-4, pl. 1, fig. 8.

1991 Hexapyle sp. Takahashi, pl. 23, fig. 7.

1995 Hexapyle armata (Haeckel) ; van de Paverd, p. 191, pl. 55, figs. 7-8, 10.

1996 Hexapyle spinulosa Chen and Tan ; Chen and Tan, p. 188, pl. 17, figs. 6-7.

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1998 Hexapyle spinulosa Chen and Tan ; Tan, p. 233, text-fig. 220.

1999 Hexapyle spinulosa Chen and Tan ; Tan and Chen, p. 227-228, text-fig. 5.136.

1999 Tetrapyle octacantha Müller ; Sashida and Kurihara, fig. 12.16.

2002 Spumellaria gen. et spp. indet. Anma, Kawakami, and Yamamoto, fig. 12.14.

2005 Hexapyle armata (Haeckel) ; Okazaki, Takahashi, Onodera, and Honda, fig. 10.10.

Remarks. This taxonomic name was selected from the described species with two triangular pseudo-concentric shells. Our sample did not include the Pylodiscus morphotype with latticed cover on both sides of a flat test or with rods from each side of the 1st triangular pseudo-concentric shell. The former is named Pylodiscus triangularis Haeckel, 1887 , whereas the latter is Pylodiscus dodecantha ( Haeckel, 1887) . These two species are regarded as a different species from Pylodiscus spinulosus ( Chen and Tan, 1989) .

Figures

FIGURE 15. Photographs of the encountered morphotypes of Pylodiscus spinulosus (Chen and Tan, 1989). All are Fr- view at Type 2. Scale bar equals 0.1 mm. All specimens are from YDY05-01.