Godia, Wu, 1986

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 : 113-114

Godia (?) lenticulata Dumitrică n. sp.

Fig. 8n

Description. Shell lenticular, circular in face view, probably consisting of many layers. External layer with small pores of different sizes and shape, and thickness of intervening bars also very different giving here and there the impression of forming imperfect triangular meshes as in the pseudoaulophacidae. Equatorial border of shell serrate.

Studied material. A single specimen in OZ834.

Holotype. Fig. 8n , coll. MGP-PD, stub PD120 -OZ834- R09-18 .

Dimensions. Diameter of shell 103 µm.

Remarks. This specimen differs from Godia (?) lens Dumitrică n. sp. by being perfectly lenticular, and by having very sparse triangular meshes and no circle of nodes. It differs also by having the structure with triangular meshes covered by a leyer with circular pores especially on the central part.

Occurrence. Only in the mentioned sample.

Spumellaria incertae family

Genus Microsandwichia Dumitrică n. gen.

Type species: Orbiculiforma (?) plana Hori 1999 Diagnosis. Spongy flat circular skeleton consisting of two parallel cortical plates that can easily shift to one another during fossilization due probably to the very fine spongy skeleton between them.

Etymology. From its resemblance to a micro sandwich.

Remarks. Acording to its spongy skeleton, this radiolari- an genus can not be an orbiculiformid. The Orbiculiformidae , as they have been used until present, represent a polyphyletic Jurassic and Cretaceous morphological group with a Crucella - type type species. The Microsandwichia seems to be a genus with a thin and completely spongy skeleton between the two faces occurring in the Upper Jurassic (Oxfordian of Carpathians to Tithonian of Japan and Tibet) and lower Cretaceous (upper Valanginian) of Sardinia, as the present specimen proves.

Figures

Fig. 8. a - Becus coronatus Dumitrică n. sp., OZ839. b-f1, j - Becus triangulocentrum Dumitrică, b - OZ836; c - same, lateral view, d - OZ836. e, f - OZ825, f1 - lateral view of fig. f. g - Alievium regulare (Wu & Li), OZ836. h, i, k, l - Alievium rotundum Dumitrică n. sp.: h, specimen destroyed showing internal structure, OZ836; i - OZ836, k, l - holotype, OZ834. m - Alievium incomptum Dumitrică n. sp., OZ836. n - Godia (?) lenticulata Dumitrică n. sp., OZ834. o - Godia (?) lens Dumitrică n. sp., OZ825. p - Alievium eurasicum Dumitrică n. sp., OZ825. r - Microsandwichia plana (Hori), OZ834. s, t - Spumellarian gen. et sp. indet., OZ834. figs. c, e-h, k, m, r, t x250, figs. a, b, d, i, j, l, p, s x300; figs. n, o, t x400.