Gorispela tuba, Dumitrică, 2024

Dumitrică, Paulian, 2024, New Middle Triassic Bell-Shaped Nassellarian Radiolaria From Alpine And Carpathian Areas, Acta Palaeontologica Romaniae 20 (1), pp. 51-75 : 62-63

Gorispela tuba n. sp.

Figs. 5a, b

Diagnosis. Shell dicyrtid, conical, trumpet-shaped and smooth-surfaced with distal portion expanded. Apical horn conical, pointed and slightly dorsally tilted, its inner side partly hollow on half proximal portion. Ventral horn conical and pointed, with hollow proximal portion. Cephalis impossible to separate from thorax, most part of its wall imperforated or with very small and sparse rounded pores. Pores start increasing in size and frequency from the level of the MB, where on consider that is the boundary between the cephalis and thorax. On thorax pores are larger but of different sizes and irregularly arranged.

Studied material. Three specimens of which two in FÖ 87, and one in Rc 4.

Holotype. Fig. 5b , FÖ 87, Hungary, coll. MGL.110280.

Dimensions. Total length of shell 128-143 µm, of shell without apical horn 80-90 µm, diameter of cephalis at the level of MB 40-48 µm, of distal end 80-103 µm.

Etymology. From the Latin tuba - trumpet.

Remarks. Gorispela tuba n. sp. has in common with the other species of this genus the general size of the shell and the hollow structure of the apical and ventral horns. It only differs by the absence of circumferential ridges and by the absence of three-bladed distal portions of the two horns.

Stratigraphic range. Upper Anisian (Illyrian) from Hungary, sample FÖ 87, to lower Ladinian (Fassanian) of the Buchenstein Formation from Recoaro, sample Rc4.

Figures

Fig. 5. a, b. – Gorispela tuba n. sp., a. – Rc4, b. – holotype, FÖ 87; c. – Gorispela bragini n. sp., holotype, Rc4 (see also fig. 3h); d-f. – Pozsvartia multicingulata n. sp., d. – holotype, FÖ 87, e. – CRH, f. – CR25, D – dorsal spine. Scale bar of 50 µm is for all figures.