Svinitzium depressum (Baumgartner, 1984)
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publication ID |
https://doi.org/ 10.35463/j.apr.2022.02.06 |
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persistent identifier |
https://treatment.plazi.org/id/EE35878D-0E47-AA1F-54AF-FE79FEE2F910 |
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treatment provided by |
Felipe |
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scientific name |
Svinitzium depressum (Baumgartner, 1984) |
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Svinitzium depressum (Baumgartner, 1984)
Figs. 14p View Fig , pa, pb
1980 Archaeodictyomitra carpatica (Lozyniak) – Okamura & Uto, pl. 2, fig. 3.
1982 Unnamed nassellariid F – Wu & Li, pl. 2, fig. 19.
1982 Pseudodictyomitra sp. – Okamura & Uto, pl. 5, fig. 1.
1982 Pseudodictyomitra carpatica (Lozyniak) – Okamura & Uto, pl. 8, figs. 7a-b.
1984 Pseudodictyomitra depressa Baumgartner , p. 782, pl. 8, figs. 2, 7, 8, 11.
1989 Pseudodictyomitra carpatica (Lozyniak) – Tumanda, p. 38, pl. 2, fig. 8.
1992 Pseudodictyomitra depressa Baumgartner – Taketani & Kanie, fig. 4.13.
1992 Pseudodictyomitra depressa Baumgartner – Steiger, p. 87, pl. 25, figs.4, 5.
1994 Wrangellium (?) depressum (Baumgartner) – Jud, p. 117, pl. 23, fig. 18; pl. 24, fig. 1.
1995 Wrangellium depressum (Baumgartrner) – Baumgartner et al., p. 632, pl. 3284 (p. 633), figs. 1-5.
2014 Svinitzium depressum (Baumgartner) – Robertson et al., fig. 10(A), 21.
1997 Svinitzium depressum (Baumgartner) – Dumitrică et al., p. 53, pl. 11, figs. 11, 17.
2017 Svinitzium depressum (Baumgartner) – Wu et al., p. 352, fig. 3.11.
Studied material. One specimen in sample OZ824, coll. MGP-PD, stub PD120 -OZ824- R13-16 (figs. 14 p, p1) and another one in PD120 -OZ839- R01-10 (fig. 14 p2). Many other specimens recorded in almost all samples but not illustrated (see Table 1) .
Dimensions. Length 240 µm.
Remarks. What is interesting in this species is that the imperforate bands of the last segments show an ornamentation of infilled pores disposed in three circumferential rows with alternating pores ( Fig. 14p View Fig 1 View Fig ) (suggesting that the origin of the genus is in the family Parvicingulidae ), or an ornamentation consisting of superficial ribs of variable directions and lengths ( Fig. 14p View Fig 2 View Fig ). These ribs are also visible, although less obvious, on the specimen of Fig. 14p View Fig 1 View Fig .
Range and occurrence. Berriasian to Valanginian, cosmopolitan.
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