Napora bondoca, Dumitrica & Zügel, 2003

Dumitrica, Paulian & Zügel, Peter, 2003, Lower Tithonian mono- and dicyrtid Nassellaria (Radiolaria) from the Solnhofen area (southern Germany), Geodiversitas 25 (1), pp. 5-72 : 58-60

Napora bondoca n. sp. ( Fig. 28F, G )

HOLOTYPE. — Photo No. 58905; stub Mue 22/21; Musée de Géologie , Lausanne, No. 74413 ( Fig. 28F ). ETYMOLOGY. — From the latinized Rumanian word bondoc: short and stout.

MATERIAL EXAMINED. — Four specimens from the type horizon (sample Mue 22).

DIMENSIONS ( IN µM). — Total length 145-175 (av. 170), length of apical horn 40-50 (av. 45), of cephalothorax 65-80 (av. 75), of feet 45-65 (av. 60), width of apical horn 20-30 (av. 25), of cephalis 39-47 (av. 42), of thorax 70-85 (av. 80).

DESCRIPTION

Test small, pyramidal, robust. Cephalis globular, imperforate with a very stout, short apical horn. Horn three-bladed with thick blades and deep, narrow groves in the proximal half, and pyramidal in the distal part. Ventral spine well developed outside, pyramidal with several blades. Thorax short pyramidal, thick-walled, with generally four transverse rows of polygonally framed, rounded pores. Feet usually as long as thorax, tapering distally, slightly divergent and curved. External ribs of feet prolonged from cephalis along thorax where they form the three edges of the pyramid. Velum not preserved in our specimens but its remains are visible on the proximal part of the lateral blades of feet.

REMARKS

This species differs from Napora boneti Pessagno, Whalen & Yeh, 1986 by having stouter apical horn and feet, external blade of feet much higher on the thorax, feet shorter. From Napora cruda Yang, 1993 it differs by the lack of subsidiary grooves on the proximal part of apical horn. All these three species are otherwise rather close morphologically.

Figures

FIG. 28. — A, B, Napora aranea n. sp.; A, holotype, view from Ll; B, paratype, dorsal view; C-E, Napora avirostrum n. sp.; C, holotype, view from Lr; D, E, paratypes; D, dorsal view; E, view from Lr; F, G, Napora bondoca n. sp.; F, holotype, view from Ll; G, paratype, view from Ll; H, Napora burckhardti Pessagno, Whalen & Yeh, 1986, dorsal view; I-K, Napora cristata n. sp.; I, holotype, right lateral view; J, K, paratypes; J, right lateral view; K, view from Ll; L, M, Napora divaricata n. sp., holotype, ventral and basal views. Abbreviations: Ll, left primary lateral spine; Lr, right primary lateral spine. Scale bars: A-E, H, K, 100 µm; F, G, I, J, L, M, 30 µm.