Saitulpus spinipes, 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 : 32

Saitulpus spinipes n. sp. ( Fig. 17F, G )

HOLOTYPE. — Photo No. 58454, 58455; stub Mue 22/21; Musée de Géologie , Lausanne, No. 74391 ( Fig. 17F, G ).

ETYMOLOGY. — From the Latin spina: spine; and pes: foot.

MATERIAL EXAMINED. — One specimen from the type horizon (sample Mue 22).

DIMENSIONS ( IN µM). — Length of cephalis 40, of feet 65, of apical horn 50, width of cephalis 60.

DESCRIPTION

Cephalis hemispheric with wide, rounded polygonal (triangular, quadrangular, pentagonal) pores. Arches Al well marked forming constrictions along cephalis. Apical horn about as long as cephalis, three-bladed, with a verticil of three spines toward the distal end. Distal end of horn beyond the verticil short, three-bladed, pointed. Ventral and secondary lateral spines not prolonged outside wall. Feet long, three-bladed; lateral blades with two pairs of spines, inner blade without spines.

REMARKS

Although the description of the species is only based on holotype, because of its rarity, the species is very well individualised. It differs from S. neojurassicus n. gen., n. sp. and S. retrospina n. gen., n. sp. especially by having feet with two pairs of spines.

Figures

FIG. 17. — A-D, Saitulpus retrospina n. gen., n. sp.; A, holotype, with foot of the left primary lateral spine broken off, right lateral view; B-D, paratypes; B, C, left lateral and basal views; D, left lateral view; E, Saitulpus sp. aff. S. retrospina n. gen., n. sp., dorsal view; F, G, Saitulpus spinipes n. gen., n. sp., holotype, dorsal and basal views. Scale bars: 30 µm.