rad_org Trisolenia megalactis megalactis img225.jpg
rad_org Trisolenia megalactis megalactis img225.jpg
1966 Disolenia cf. variabilis (Haeckel) - Benson p. 123; pl. 2, fig. 5
1967 Disolenia quadrata (Ehrenberg) - Nigrini p. 19; pl. 1, fig. 5
1979 Trisolenia megalactis megalactis - Bjørklund and Goll p. 1321; pl. 5, figs. 1-4
1983 Disolenia quadrata (Ehrenberg) - Benson p. 502
1995 Trisolenia megalactis forma megalactis - van de Paverd p. 72; pl. 13, figs. 1-2
From Suzuki Paleotax db:
1861 Trisolenia megalactis n. sp. [nomen nudum] Ehrenberg p. 769
1873 Trisolenia megalactis Ehrenberg Ehrenberg p. 300-301, pl. 8, fig. 19
1873 Trisolenia megalactis n. sp. Ehrenberg p. 321
1887 Solenosphaera (Solenosphactra) megalactis (Ehrenberg) Haeckel p. 114
1979 Trisolenia megalactis Ehrenberg sesu emend. herein Bjørklund & Goll p. 1318, 1321
1979 Trisolenia megalactis costlowi n. subsp. Bjørklund & Goll p. 1322, 1324, pl. 4, figs. 5, 6, 9-12, pl. 6, figs. 1-11
1979 Trisolenia megalactis megalactis Ehrnberg sensu emend. Bjørklund & Goll p. 1321-1322, pl. 5, figs. 1-21
1983 Trisolenia megalactis megalactis Ehrenberg Srinivasan et al. p. 7, pl. 3, figs. 5, 6
1989 Siphonosphaera (Disolenia) megalactis (Ehrenberg) Menshutkin & Vishnevskaya p. 96, fig. 22
1989 Siphonosphaera (Otosphaera) costlowi (Bjørklund & Goll) Menshutkin & Vishnevskaya p. 98, fig. 35
1993 Trisolenia megalactis megalactis Ehrenberg emend. Bjorklund and Goll Sharma & Singh pl. 1, fig. 8 (only)
1993 Trisolenia megalactis megalactis Ehrenberg, emend. Gjorklund and Goll Sharma & Singh pl. 1, fig. 9 (only)
2009 Trisolenia megalactis Ehrenberg [type specimen in the Ehrenberg collection] Suzuki et al. pl. 51, figs. 8a-8c
Catalog entries: Trisolenia megalactis
type image: T. megalactisOriginal description: Polycystinum solitarium? ex Halicalyptrinis? Lorica triangula porosa aut foveolata, angulis tubulosis perforatis prominentibus.
QTGrevilleae et Coryli avellanae pollen ad hanc formam accedit, sed similitude formae parvi momenti est, cum nec Coryli nec Grevilleae in abyssis floreant et illorum corpusculorum magna copia ex iis producta sit.
Translated description: [Solitary ?, polycystins of the Halicalyptrinae. Shell triangular, porous or pitted. with prominent, perforated tubular angles. The pollen of Grevilleae and Coryli avellanae resembles this form, but similarity of shape is of little importance, since neither Coryli nor Grevilleae flower in the depths of the ocean, and a great quantity of Trisolenia is found in deep-sea sediments. (Translated from Latin by E.M.R. and W.R.R.)]
Remarks on original description: Premature name in Ehrenberg, 1860a [775:769[comment from RadWorld database]
Benson 1966 - Disolenia quadrata Single latticed shell ranging from subspherical or ellipsoidal to nearly discoidal with three to four (possibly more or less) unbranched, fenestrated, cylindrical tubules located approximately in one plane. Tubules merge with shell wall proximally without sharp angle but remain constant in diameter distally; mouths of tubules smooth; pores of tubules subelliptical to subrectangular, subregularly arranged in vertical rows. Shell surface smooth; pores of shell subcircular to subelliptical to irregular in shape, subequal in size, between one and two times as broad as the bars, irregular in arrangement, 13-20 on half the circumference. Measurements: based on three specimens from station 27: major shell diameter 78-102 µm; length of tubules 12-25 µm; diameter of tubules 18-34µm. Remarks: Because this species is very rare in the Gulf, its complete range of intraspecific variation could not be studied. It is similar to Riedel's illustration (1953, Pl. 849, fig. 8) of forms from the late Tertiary of Rotti that he tentatively identified as Solenosphaera variabilis Haeckel. Both this species and Tetrasolenia quadrata Ehrenberg have four fenestrated tubules located approximately in one plane as well as a subdiscoldal, smooth, latticed shell. Distribution: In the Gulf of California this species is very rare and occurs only at five southern Gulf stations, 27, 34, 46, 60, and 81.It is therefore an oceanic form. Its occurrence else-where has been reported from the Indian Ocean between Zanzibar and the Comoro Islands, and from the central tropical Pacific (Riedel, 1953, p. 808).It is apparently a tropical oceanic species. \ From: Benson, 1966, p. 123; pl. 2, fig. 5: Disolenia cf. variabilis (Haeckel) ?Solenosphaera variabilis Haeckel, 1887, Challenger Rept., Zool., vol. 18, p.113; Riedel, 1953, Journ. of Paleo., vol. 27, p. 808, Pl. 84,fig. 8.?Tetrasolenia quadrata Ehrenberg, 1873a, Akad. Berlin, Monatsb., (1872), pp. 320-321; 1873b, Akad. Berlin, Abhandl. (1872), Pl. 10, fig. 20.
Published descriptions
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"
Plot of occurrence data:
Benson, R. N. (1966). Recent Radiolaria from the Gulf of California. Thesis, Minnesota University. 1-577. gs Bjørklund, K. R. & Goll, M. R. (1979). Internal skeletal structures of Collosphaera and Trisolenia: A case of repetitive evolution in Collosphaeridae (Radiolaria). Journal of Paleontology. 53(6): 1239-1326. gs Campbell, A. S. (1954). Radiolaria. In, Moore, R. C (ed.) Treatise on Invertebrate Paleontology, Part D Protista 3. Protozoa (Chiefly Radiolaria and Tintinnina). D(3): 1-163. gs Ehrenberg, C. G. (1873b). Mikrogeologische Studien als Zusammenfassung seiner Beobachtungen des kleinsten Lebens der Meeres-Tiefgründe aller Zonen und dessen geologischen Einfluss. Monatsberichte der Koniglichen Preussische Akademie der Wissenschaften zu Berlin. 1872: 265-322. gs Nigrini, C. A. (1967). Radiolaria in pelagic sediments from the Indian and Atlantic Oceans. Bulletin of the Scripps Institution of Oceanography. 11: 1-125. gs van de Paverd, P. J. (1995). Recent Polycystine Radiolaria from the Snellius-II Expedition. Thesis, Free University Amsterdam. 1-351. gsReferences:
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Trisolenia megalactis megalactis compiled by the radiolaria@mikrotax project team viewed: 21-5-2025
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