radiolaria - rads_cat - Spongatractus <title>radiolaria - rads_cat - Spongatractus


This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.

Higher levels: rads_cat -> S -> Spongatractus
Other pages this level: << < Spirema, Spiremaria, Spireuma, Spirillina, Spirocampe, Spirocapsa, Spirocyrtis, Spiromultitunica, Spironium, Spiropyle, Spirotunica, Spongaster, Spongasteriscinus, Spongasterisculus, Spongasteriscus, Spongatractus, Spongechinus, Spongellipsis, Spongiocanium, Spongioconcha, Spongiomma, Spongiopodium, Spongiuspinus, Spongobrachium, Spongocore, Spongocyclia, Spongocyrtis, Spongodendron, Spongodictyoma, Spongodictyon, Spongodictyum> >>

Spongatractus balbis Sanfilippo & Riedel 1973
= Spongatractus balbis
Spongatractus californicus Campbell & Clark 1944

not figuredSpongatractus fusiformis Haeckel 1887

Spongatractus klausi Sanfilippo & Blome 2001

not figuredSpongatractus streptacanthus Haeckel 1887


Citation: Spongatractus Haeckel 1887
Rank: genus
Type species: Spongosphaera pachystyla Ehrenberg 1873 [designated by Chediya,1959, p.115]
Described on page(s) : 350
Family (traditional): Spongodiscidae

Current identification/main database link: Spongatractus Haeckel 1887

Original Description

Spongurida with spongy ellipsoidal cortical shell, enclosing a simple, spherical or ellipsoidal, latticed medullary shell. On the poles of the axis occur opposite strong spines.

The genus Spongatractus differs from Spongodruppa by development of two strong spines in the axis of the shell, on its two opposite poles; therefore it bears the same relation to the latter that Lithatractus does to Druppula, and can be derived from Lithatractus by a spongy thickening of the cortical shell.



Greek spongatractus = spongy-spindle"

Extra details from original publication

Editors' Notes
[Campbell [1954, p.D74] considers Spongatractus Haeckel, 1887a to be an objective synonym of Spongosphaera Ehrenberg, 1847b. He designates Spongosphaera pachystyla Ehrenberg, 1873a as the type species of Spongosphaera and only by inference of Spongatractus. However, the type species of Spongosphaera [by subsequent monotypy] is Spongosphaera polyacantha Muller, 1857. Therefore, we consider the type species designation of Spongosphaera pachystyla Ehrenberg, 1873a, p.256; Ehrenberg, 1875, pl.26, fig.3, x300 for Spongatractus to date from Chediya, 1959, p.115].


Haeckel, E (1887a). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873-1876. 18: 1-1803. gs O


Spongatractus compiled by the radiolaria@mikrotax project team viewed: 7-2-2023

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