radiolaria - rads_cat - Arachnocalpis ellipsoides

CATALOG OF ORIGINAL DESCRIPTIONS: Arachnocalpis ellipsoides Haeckel 1887

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 -> A -> Arachnocalpis -> Arachnocalpis ellipsoides
Other pages this level: A. ellipsoides, A. ovatiretalis, A. sphaeroides, A. tumulosa

Arachnocalpis ellipsoides

Citation: Arachnocalpis ellipsoides Haeckel 1887
Rank: species
Described on page(s) : p.1172
Type specimens: pl.98, figs.13,13a
Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Type locality: LM27; LM29; LM122; LM33
Type repository: No information given

Current identification/main database link: Arachnocalpis ellipsoides Haeckel 1887

Original Description

Shell ellipsoidal, one and a half times as long as broad, on the apical pole hemispherical, on the basal pole coronate, with an elegant prominent funnel-shaped peristome, which is one-eighth as broad as the shell, fenestrated by very fine pores, and bears fifteen to twenty short conical divergent teeth. Inner shell with irregular polygonal meshes of very different size, separated by thin, finely denticulate bars. Outer spongy shell very delicate, arachnoidal, with numerous prominent conical spongy papillæ. Central capsule ellipsoidal, half as long and broad as the shell.


Shell 460µm, long, 320µm, broad; mouth 45µm broad.


Extra details from original publication

Editors' Notes
see Arachnocalpis sphaeroides and Spongocyrtis arachnoides in Haeckel, 1887a.[comment from RadWorld database]


Haeckel, E (1887). 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


Arachnocalpis ellipsoides compiled by the radiolaria@mikrotax project team viewed: 30-9-2022

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