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 -> P -> Periarachnium
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Periarachnium pauliani Renaudie & Lazarus 2016
= Periarachnium pauliani
Periarachnium periplectum Haeckel 1887
= Periarachnium periplectum


Citation: Periarachnium Haeckel 1882
Rank: genus
Type species: Periarachnium periplectum Haeckel 1887 [only one valid species]
Described on page(s) : 430
Family (traditional): Theoperidae

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Current identification/main database link: Periarachnium Haeckel 1882

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.
§4. secundo articulo spinis pallio arachnoideo incluso.

Translation: 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.
§4. With the second segment enclosed by an arachnoidal mantle. (Translated from Latin by E.M.R. and W.R.R.)]

Etymology: From the Greek periarachnium = shell enveloped by cobweb"


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


Periarachnium compiled by the radiolaria@mikrotax project team viewed: 19-4-2021

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