radiolaria - rads_cenozoic - Octopyle stenozona

Citation: Octopyle stenozona Haeckel 1887

Synonyms:
1887 Octopyle stenozona - Haeckel p. 652; pl. 9, fig. 11
1966 Octopyle stenozona - Benson p. 251-252; pl. 16, figs. 3-4
1977 Octapyle [sic.] stenozona - Molina-Cruz p. 335; pl. 5, figs. 1-3
1979 Octopyle stenozona - Nigrini and Moore p. S123-S124; pl. 16, figs. 2a-2b
1981 Octopyle stenozona - Takahashi and Honjo p. 150; pl. 6, fig. 7
1983 Octopyle stenozona - Benson p. 506

From Suzuki Paleotax db:

1887 Octopyle (Octopylura) stenozona n. sp. Haeckel p. 652, pl. 9, fig. 11
1969 Octopyle stenozona Haeckel Goll fig. 1.1
1973 Octopyle stenozona Haeckel Bjørklund pl. 1, fig. p
1977 Octyopyle stenozoa (Haeckel) [sic] Molinap. 335, pl. 5, figs. 1-3
1979 Octopyle stenozona Haeckel Nigrini & Moore S123-124, pl. 16, figs. 2a, 2b
1981 Octopyle stenozona Haeckel Takahashi & Honjo p. 150, pl. 6, fig. 7
1982 Octopyle stenozona Haeckel Molinap. 995, pl. 2, fig. 9
1984 Octopyle stenozona Haeckel Nishimura & Yamauchi pl. 3, fig. 13
1985 Octopyle stenozona Haeckel Boltovskoy & Jankilevich pl. 3, fig. 22
1987 Octopyle stenozona Haeckel Bjørklund & de Ruiter fig. 2.17
1990 Octopyle stenozona Haeckel Fujioka pl. 42, fig. 4
1990 Octopyle stenozona Haeckel Yeh & Cheng pl. 3, fig. 9
1990 Octopyle stenozona Haeckel sensu emend. Tan et Chen Tan & Chen p. 116-117, text-fig. 8, pl. 1, figs. 7-9
1991 Octopyle stenozona Haeckel Takahashi p. 90, pl. 23, fig. 8
1993 Octopyle stenozona Haeckel Sharma & Singh pl. 2, fig. 19
1994 Octopyle stenozona Haeckel Haslett p. 132, pl. 2, fig. 3 (only)
1994 Octopyle stenozona Haeckel Haslett p. 132, pl. 5, fig. 3 (only)
1996 Octopyle stenozona Haeckel Chen & Tan p. 195, pl. 21, figs. 11-13
1998 Octopyle stenozona Haeckel Tan p. 259-260, text-fig. 245
1999 Octopyle stenozona Haeckel sens emend. Tan & Chen (1990) Tan & Chen p. 24-249, text-fig. 5.159
2012 Octopyle stenozona Haeckel Krsinic & Krsinic pl. 3, fig. 23

Taxonomic discussion: Haeckel 1887; Nigrini & Moore 1979 p S123 pl 16 fig 2

Original description: Cortical shell quadrangular, with thorny surface, and four conical spines in the lateral plane, on the points, where both cortical girdles are crossed. Lateral girdle very narrow, nearly square, with rounded corners, of equal length and breadth. On the isthmus of the narrow transverse girdle only one pore. Sagittal septum of the same length as the subspherical medullary shell. Eight gates irregular roundish or nearly circular.
Remarks on original description: Haeckel listed Octopyle stenozona under the subgeneric name Octopylura, but did not include the subgeneric name in the species name.[comment from RadWorld database]

Description

Benson 1966 - Octopyle stenozona

Test subquadrate in outline, with one complete system of inner dimensive girdles with elliptical outline in frontal view and with the second transverse girdle complete as well as most of the second lateral girdle; the lateral girdle has short spines or thorns, parallel to the sagittal axis extending from it in the region of the poles of the principal axis, suggestive of a rudimentary second sagittal girdle; however, no specimens from the Gulf were observed with this girdle. Second transverse and lateral girdles very narrow, with large unequal pores separated by heavy intervening bars; surface of both girdles with short, stout spines or thorns, unbranched distally. Test typically with a pair of heavy, cylindrical beams, oppositely placed, coaxial with the principal axis of the test, each arising from the surface of the innermost ellipsoidal shell and joining with the second lateral girdle distally; the presence of the beams gives the test the appearance of having eight subcircular gates, four on each side of the test, whereas there are only four true gates, two each on the dorsal and ventral surfaces of the test.

Measurements: based on 8 specimens from stations 27, 34, 46, and 71 [see Benson, 1966, text-fig. 18 under Tetrapyle octacantha group]: length of P1 axis 15-18 m, of P2 axis 43-52 µm, of P3 axis 123-191 µm, of T1 axis 11-14 µm, of T2 axis 34-41 µm, of T3 axis 119-154 µm.

Remarks: Although rare in the Gulf this species is easily distinguished from Tetrapyle octacantha by its very narrow second transverse and lateral girdles, very short sagittal axis relative to the principal and transverse axes, its generally quadrangular outline, and by the presence of the two heavy polar beams which occupy the principal axis and give the test the appearance of having eight gates instead of four. Haeckel (1887, p. 652) misinterpreted the polar beams as each representing a sagittal septum, but his illustration shows that they are beams (op. cit., P1. 9, fig. 11).

Distribution: This species is very rare in the Gulf. It is present only in the southern half of the Gulf at stations 27, 34, 46, 56, 71, 81, 91, and 106.It is, therefore, an oceanic species. Haeckel reported Octopyle stenozona from the tropical Atlantic at Challenger station 338.It has not been reported from high latitudes and is apparently confined to tropical regions. \ From: Benson, 1966, p. 251-252; pl. 16, figs. 3-4:Octopyle stenozona HaeckelOctopyle stenozona Haeckel, 1887, Challenger Rept., Zool., vol. 18, p. 652, P1. 9, fig. 11.

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: Lazarus et al. 2015 - "R age group"
First occurrence (base): within Quaternary Period (0.00-2.59Ma, base in Gelasian stage). Data source: Lazarus et al. 2015 - "R age group"

References:

Benson, R. N. (1966). Recent Radiolaria from the Gulf of California. Thesis, Minnesota University. 1-577. gs

Benson, R. N. (1983). Quaternary radiolarians from the Mouth of the Gulf of California, Deep Sea Drilling Project Leg 65. Initial Reports of the Deep Sea Drilling Project. 65: 491-523. gs

Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873-1876. 18: 1-1803. gs O

Molina-Cruz, A. (1977). Radiolarian assemblages and their relationship to the oceanography of the subtropical southeastern Pacific. Marine Micropaleontology. 2(4): 315-352. gs

Nigrini, C. A. & Moore, T. C. Jr. (1979). A guide to modern Radiolaria. Cushman Foundation for Foraminiferal Research, Special Publication. 16: 1-260. gs O

Takahashi, K. & Honjo, S. (1981). Vertical flux of Radiolaria: A taxon-quantitative sediment trap study from the western tropical Atlantic. Micropaleontology. 27(2): 140-190. gs

Octopyle stenozona

Taxonomy

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

References:

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