radiolaria - rads_cat - Cromyatractus radiolaria - rads_cat - Cromyatractus


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 -> C -> Cromyatractus
Other pages this level: << < Cornutanna, Cornutella, Cornutura, Corocalyptra, Coronidium, Coronophatna, Coronosphaera, Cortina, Cortiniscus, Corythomelissa, Corythospyris, Coscinomma, Craspedilium, Craterocyclas, Cristallosphaera, Cromyatractus, Cromydruppocarpus, Cromyechinus, Cromyocarpus, Cromyodruppa, Cromyodrymus, Cromyomma, Cromyosphaera, Cromyosphaerium, Cromyostaurolonche, Cromyostaurus, Cromyostylus, Crucidiscus, Cryptocapsa, Cryptocarpium, Cryptocephalus> >>

Cromyatractus ceparius Haeckel 1887

Cromyatractus cepicius Haeckel 1887

Cromyatractus elegans Dogel 1969
= Cromyatractus elegans
Cromyatractus tetracelyphus Haeckel 1887

not figuredCromyatractus tetralepas Haeckel 1887

Cromyatractus tetraphractus Haeckel 1887


Citation: Cromyatractus Haeckel 1887
taxonomic rank: genus
Type species: Cromyatractus tetraphractus Haeckel 1887 [designated by Chediya,1959, p.112]
Described on page(s) : 334
Family (traditional): Actinommidae

Current identification/main database link: Cromyatractus Haeckel 1887

Original Description

Druppulida with four or more concentric shells (two medullary shells and two or more cortical shells), in the main axis with two large opposite polar spines of equal size and similar form.

From the Greek cromyatractus = onion-spindle"

Extra details from original publication
The genus Cromyatractus is very nearly allied to all the foregoing genera, which bear two equal spines opposite to one another on the poles of the main axis; it differs from them in the multiplication of the cortical shell, and may be considered as the most highly developed form of this amphistylous series, which proceeds from Ellipsoxiphus to Lithatractus and Stylatractus.

[Campbell, 1954, p.D70 considers Cromyatractus Haeckel, 1887a, to be an objective synonym of Caryodoras Haeckel, 1881a. He designates Cromyatractus tetraphractus Haeckel, 1887a as the type species of Caryodoras and only by inference of Cromyatractus. However, this seems inappropriate since no species are known to have been assigned to Caryodoras. Therefore, we consider the type species designation of Cromyatractus tetraphractus Haeckel, 1887a, p.335, pl.15, fig.3, x300 to date from Chediya, 1959, p.112.]
Sub-genera described:


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 O


Cromyatractus compiled by the radiolaria@mikrotax project team viewed: 21-4-2024

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