Diameter, of spongy sphere, 130µm, of largest surface alveoles, 14µm; length, of vertical (short) axis, 410µm, of transverse (long) axis, 440µm, of polar spine, l00µm.
SPONGOSATURNALIS n. gen. Campbell and Clark, 1944b, p. 7
Type species:Spongosaturnalis spiniferus Campbell and Clark (monotypy)
Description:Spongostylinae with solid sphere of spongy framework and 2 equal opposite polar spines with distal ends connected by a circular or elliptical ring.
Remarks:Spongosaturnalis differs from Spongolonche in union of solid polar spines, forming a ring around spongy shell. It was probably derived from Saturnalis by the development of a spongy rather than hollow lattice sphere, or from Spongolonche by the bifurcation of the spines to form the ring.
Stratigraphic range:Upper Cretaceous, Mesozoic.
Etymology:[No information given]
Subsequent descriptions:YES
[Synonymized with ACANTHOCIRCUS by Pessagno, 1977b, p.73.
Spongosaturnalis spiniferus n. sp. Campbell and Clark, 1944b, p. 7
(Pl. 2, figs. 1-5)
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Description and dimensions:Shell very large, with subcircular ring which has several lateral marginal thorns; spongy shell subspherical, large (diameter 0.26 - 0.30 transverse axis of ring), composed of wickerwork of delicate tangled bars and large polygonal alveoles similar everywhere in whole globular shell except that the central 0.5 (or more) is dense (apparently a compact solid bulbous mass from ends of which arise polar spines which penetrate the spongy shell as in Saturnalis dizonius Rüst, 1898); central mass devoid of porous openings (not a lattice sphere); surface of alveolar shell a polygonal mesh without differentiated pores other than those alveoles which lie next to surface; surface usually only a little irregular except as torn; polar spines equal, rodlike, at two opposite poles of shell (at shorter axis of subcircular ring); ring arising from distal ends of 2 polar spines where it bifurcates and then unites with right and left lateral hooplike portion, prismatic in section with base of triangular rod inside the circle, sharp edge outside and bearing a variable number (8-10, generally 8 on one side and 9 on the other) of triangular thornlike spines, these not symmetrically disposed except for a pair, one spine of which lies on each side of bifurcation of polar spine.
Diameter, of spongy sphere, 130µm, of largest surface alveoles, 14µm; length, of vertical (short) axis, 410µm, of transverse (long) axis, 440µm, of polar spine, l00µm. |
Repository:Slides Nos. 34522, 34545. [? Museum of Paleontology, University of California at Berkeley]
Type locality:Corral Hollow shales, Tesla area, California, USA.
Original stratigraphic range:Upper Cretaceous, Mesozoic.
Etymology:[No information given]
Subsequent descriptions:YES
Literature cited:- Campbell, A. S. and B. L. Clark (1944b). Radiolaria from Upper Cretaceous of Middle California. Geological Society of America Special Paper 57: 1-61.
- Rüst, D. (1898). Neue Beiträge zur Kenntniss der Fossilen Radiolarien aus Gesteinen des Jura und der Kreide. Paläontographica 45: 1-67.
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