CATALOG OF ORIGINAL DESCRIPTIONS: Actinomma pachyderma 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 -> Actinomma -> Actinomma pachyderma
Other pages this level: << < A. intermedium, A. japonicum, A. kerguelenensis, A. leptodermum longispina, A. livae, A. magnifenestra, A. medianum, A. mediterranensis, A. miocenicum, A. mirabile, A. multispinula, A. nigriniae, A. octoacanthium, A. okurai, A. pachycapsa, A. pachyderma, A. pellucidata, A. plasticum, A. polyceris, A. regulare, A. rotula, A. saccoi, A. schwageri, A. sol, A. spinigerum, A. staurotholonia, A. tanyacantha, A. telarania, A. tetracanthum, A. turidae, A. undosa setigera> >>

Actinomma pachyderma

Citation: Actinomma pachyderma Haeckel 1887
Rank: species
Type specimens: pl.29, figs.4-5
Type repository: No information given
Described on page(s) : p.254
Family (traditional): Actinommidae
Family (modern): Stylosphaeridae

<% linkedspecs %>

Current identification:

Original Description
Cortical shell very thick walled, with regular, circular, double-edged pores, twice as broad as the bars. Both medullary shells with simple, small, circular pores, of the same breadth as the bars. Radial proportion of the three spheres = 1: 2: 4; radial spines about twenty, conical, shorter than the radius, prolonged inside into twenty very thin connecting beams (fig. 4).

Diameter of the outer shell 80µm, middle 40µm, inner 20µm; cortical pores 10µm bars 5µm; length of the spines 30µm, basal breadth 10µm.

Editors' Notes
Haeckel listed Actinomma pachyderma under the subgeneric name Actinommetta, but did not include the subgeneric name in the species name.
[presumably Quaternary, though at least one form (Lithochytris lucerna) reported from this station appears to be Eocene - Riedel and Sanfilippo, 1970, p.506, 528]]


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


Actinomma pachyderma compiled by the radiolaria@mikrotax project team viewed: 20-4-2021

Taxon Search:
Advanced Search

Short stable page link: Go to to create a permanent copy of this page - citation notes

Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
Captcha Image
Powered by Commentics