Favosyringium cf. 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 : 149

Favosyringium cf. affine (Rüst, 1898)

Fig. 15n

Remarks. This only specimen at disposal differs from F. affine (Rüst) by having an ellipsoidal abdomen and a less marked postlumbar constriction. It may be a member of this species, representing just a morphological variation of the holotype. The scarcity of specimens examined by Rüst does not allow any knowledge of the variability of the species. For example, the distal tube is open in the only entire specimen illustrated by Dieni & Massari (1991), whereas the holotype and the specimen illustrated by Steiger (1992, pl. 21, fig. 10) have a narrow tube with a very long distal spine.

Range. The same as the type species.

Figures

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.