CATALOG OF ORIGINAL DESCRIPTIONS: Pentalastrum cometa 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 -> P -> Pentalastrum -> Pentalastrum cometa
Other pages this level: P. asteracanthion, P. astropecten, P. cometa, P. ophidiaster

Pentalastrum cometa

Citation: Pentalastrum cometa Haeckel 1887
Rank: species
Type repository: No information given
Described on page(s) : p.557
Family (traditional): not-known

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Current identification:

Original Description
Arms nearly cylindrical, at their obtuse truncated distal end one and a half times as broad as at their base. Posterior odd arm very large, with eleven joints, about three times as long as the two lateral arms (with five joints each) and four times as long as the two anterior arms (with three joints each). Angles between the paired arms different; the two lateral angles smaller than the two posterior, and these smaller than the odd anterior angle.

Radius of the odd posterior arm 0.5, of the lateral arms 0.25, of the anterior arms 0.18; basal breadth 0.05, distal breadth 0.08.

Editors' Notes
There was no illustration of this species in Haeckel (1887)
Haeckel listed Pentalastrum cometa under the subgeneric name Pentalastromma, but did not include the subgeneric name in the species name.


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 year 1873-1876, Zoology. 18: 1-1803. gs


Pentalastrum cometa compiled by the radiolaria@mikrotax project team viewed: 18-4-2021

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