Favosyringium affine (Rüst, 1898)

Dumitrica, Paulian, Dieni, Iginio & Massari, Francesco, 2022, Valanginian Radiolarians Of Ne Sardinia (Italy) In The Frame Of The Weissert Event, Acta Palaeontologica Romaniae 18 (2), pp. 97-159 : 148-149

Favosyringium affine (Rüst, 1898)

Figs. 6c , 15m

1898 Eusyringium affine Rüst , p. 60, pl. 17, fig. 8.

1973 Podobursa triacantha (Fischli) – Foreman, p. 266, pl. 13, figs. 2, 4, 6 non 1, 3, 5, 7.

1973 Dibolachras apletopora Foreman , p. 265, pl. 11, fig. 3, non 11.

1992 Favosyringium affine (Rüst) – Steiger, p. 79, pl. 21, fig. 10, non 11, 12.

1991 radiolari – Dieni & Massari, fig. 23c.

2009 Eusyringium affine (Rüst) – O’Dogerty et al., p. 332, fig. 460.

2009 Sethocapsa sp. – Ishii et al., p. 348, pl. 21, fig. 9.

2017 Hiscocapsa (?) mirifica Wu et al., p. 359, fig. 2-11, 12.

2017 Spinosicapsa sp. aff. S. quadriaculeata (Steiger) – Xu & Luo, p. 166, fig. 5O, P

Description. Shell with a long conical apical horn, a porous cephalis, a thorax with small circular pores, and a bulbous abdomen with larger pores. Pores circular but hexagonally framed on the surface and disposed quincuncially in circumferential and oblique rows. All segments are separated from one another by evident collar and lumbar constrictions, respectively. Distal tube is inverted conical, usually rather long and open or prolonged in a spine. Pores of distal tube disposed usually in longitudinal rows.

Remarks. Steiger ( 1992) illustrated under this species 3 specimens: one (pl. 21, fig. 10) has a conical apical horn, the other two (pl. 21, figs. 11, 12) have bladed apical horns. We include in this species only the specimen with conical apical horn, as the specimens with bladed horns must belong to another genus or, at least, to another species. The specimen illustrated by Ishii et al. (2009) belongs to this species and not to Sethocapsa . It resembles very well the specimen from s’Ozzastru section and is nothing else than a specimen with broken off distal tube. The specimen described as Hiscocapsa (?) mirifica n. sp. by Wu et al. (2017) does not belong at all to Hiscocapsa . It is a specimen of Eusyringium affine with the apical part broken off and reversely mounted on the plate, with the apical part (partly broken off) and downwardly directed, and the distal tube apically directed.

Range. Berriasian to Valanginian as far as we know.

Figures

Fig. 6 Radiolarians illustrated by Dieni & Massari, 1991 in their Fig. 23c-i which correspond to the letters from that article: c - Favosyringium affine (Rüst), d - Pseudoxitus seriola - Dumitrică, e - Williriedellum peterschmittae Schaaf, f - Cryptamphorella Dumitricăi Schaaf, g – Ristola nakatonbetsensis Tumanda, h - Crococapsa zweili (Jud), i - Cryptamphorella circumthoracica Dumitrică n. sp., Fig. c x200, figs. d-i x250.

Fig. 15 a - Pseudodictyomitra nodocostata Dumitrică, OZ839. b-e - Tethysetta usotanensis (Tumanda): b - OZ837, c, d - OZ836, c1 - details of pore morphology, e - OZ838. f-h - Tethysetta reducta Dumitrică n. sp.: f - OZ836, g - OZ839, h - OZ834. i - Tethysetta ovoidala Dumitrică, OZ836, i1 - details of pore morphology. j-l - Tethysetta cingulifera Dumitrică: j - OZ838, k, l - OZ839. m - Favosyringium affine (Rüst), OZ834. n - Favosyringium cf. affine (Rüst), fragment of shell, OZ836. o - Favosyringium quadriaculeatum Steiger, fragment of shell, OZ838. p-t - Pseudoxitus seriola Dumitrică: p - OZ839, r-t - OZ836. Figs. a-I, m-t x250, figs. j-l x300.