Spongatractus pachystylus

Classification: rads_cenozoic -> Spongodiscidae -> Sponguridae -> Spongatractus -> Spongatractus pachystylus
Sister taxa: S. balbis, S. pachystylus, S. sp.


Citation: Spongatractus pachystylus (Ehrenberg 1873)
Rank: species
Taxonomic discussion: (Ehrenberg) 1873; 1875; Sanfilippo and Riedel 1973; Sanfilippo & Riedel 1985

Catalog entries: Spongosphaera pachystyla

Original description: [Sphere oblong-globose, spongy, with thorny surface, with an obscure median nucleus, and irregular pores not in rows; with two opposite spines strongly thickened and slightly sulcate, acute terminally. Length without spines 185 µ, of a larger spine 135 µ. Width 125 µ. Diameter of nucleus 41 µ. Width of a spine 41 µ. (Translated from Latin by E.M.R. and W.R.R.)]


Biogeography and Palaeobiology

Similar species: pachystylus

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Paleogene Period (23.03-66.04Ma, top in Chattian stage). Data source: Lazarus et al. 2015 - "P age group"
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Lazarus et al. 2015 - "P age group"

Plot of occurrence data:


Ehrenberg, C. G. (1873a). Grössere Felsproben des Polycystinen-Mergels von Barbados mit weiteren Erläuterungen. Monatsberichte der Koniglichen Preussische Akademie der Wissenschaften zu Berlin. 1873: 213-263. gs

Ehrenberg, C. G. (1876). Forsetzung der Mikrogeologischen Studien als Gesammt Ubersicht der mikroskopischen Palaontologie gleichartig analysierter Gebiegsarten der Erde, mit specieller Rucksicht aus den Polycystinen Mergel von Barbados. Abhandlungen der Koniglichen Akademie der Wissenschaften zu Berlin, Physikalische Kl. 1875: 1-226. gs

Sanfilippo, A. & Riedel, W. R. (1973). Cenozoic Radiolaria (exclusive of theoperids, artostrobiids and amphipyndacids) from the Gulf of Mexico, Deep Sea Drilling Project Leg 10. Initial Reports of the Deep Sea Drilling Project. 10: 475-608. gs

Sanfilippo, A. & Riedel, W. R. (1985). Cretaceous Radiolaria. In, Bolli, H. M. , Saunders, J. B. & Perch-Nielsen K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 573-630. gs


Spongatractus pachystylus compiled by the radiolaria@mikrotax project team viewed: 19-1-2021

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