radiolaria - rads_cenozoic

Conarachnium

Classification: rads_cenozoic -> Theoperidae -> Theoperidae inc sed -> Conarachnium
Sister taxa: Anthocorys, Anthocyrtella, Aphetocyrtis, Cassideus, Conarachnium, Cyrtolagena, D. middouri, Dictyopodium, Diplocyclas, Eurystomoskevos, Lithapium, Lithomitrissa, Lophoconus, Lophocorys, Phrenocodon, Sethochytris, Sethoconus, Stichocampe, Theocorys, Udan

Daughter taxa (time control age-window is: 0-800Ma)
				Conarachnium facetum neptune records:
				Conarachnium parabolicum neptune records:
				Conarachnium sp. neptune records:

Taxonomy

Citation: Conarachnium Haeckel 1881

Rank: genus

Basionym: Conarachnium

Catalog entries: Conarachnium

Original description: 2a.Tribus: Sethocorida. Dyocyrtida aperta eradiata.
A. Sethocorida limbata = Lophophaenida. (Sethocorida margine ostii. laevi aut succiso).
AII. acuta (capitulo spinoso, non laevi).
IIb. secundo articulo conico, ostio nec coarctato nec dilatato.
b++ spinis capituli pluribus
§1. sec. articulo laevi.

Translated description: 2a. Tribe: Sethocorida. Open eradiate dyocyrtids.
A. Sethocorida with a girdle = Lophophaenida (Sethocorida with a smooth or truncate apertural margin).
AII. Acute (with cephalis spiny, not smooth).
IIb. With the second segment conical and the aperture neither constricted nor dilated.
b++ With more than one cephalic spine.
§1. With the second segment smooth. (Translated from Latin by E.M.R. and W.R.R.)]
Remarks on original description: Although described as a sub-genus by Haeckel, Conarachnium has been used as a genus in the description of the species listed here.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant Data source: Total of range of species in this database
First occurrence (base): at base of Gelasian Stage (0% up, 2.6Ma, in Gelasian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Theoperidae inc sed

References:

Haeckel, E. (1882). Entwurf eines Radiolarien-Systems auf Grund von Studien der Challenger-Radiolarien [Basis for a radiolarian classification from the study of Radiolaria of the Challenger collection]. Jenaische Zeitschrift für Naturwissenschaft. 15: 418-472. gs

Conarachnium compiled by the radiolaria@mikrotax project team viewed: 27-1-2021

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Short stable page link: http://mikrotax.org/radiolaria/index.php?id=203666 Go to Archive.is to create a permanent copy of this page - citation notes

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