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radiolaria - rads_cat - Pityomma drymodes radiolaria - rads_cat - Pityomma drymodes

CATALOG OF ORIGINAL DESCRIPTIONS: Pityomma drymodes 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 -> Pityomma -> Pityomma drymodes
Other pages this level: P. drymodes, P. piniferum, P. scoparium

Pityomma drymodes

Citation: Pityomma drymodes Haeckel 1887
Taxonomic rank: species
Described on page(s) : p.260
Type specimens: pl.29, fig.9
Type repository: No information given
Family (traditional): Actinommidae
Family (modern): Rhizosphaeridae

Current identification:


Original Description

Cortical shell thin walled, connected with both medullary shells by very numerous (one hundred to two hundred or more) very thin radial beams, which are prolonged outside into thin branched radial spines, scarcely half as long as the shell radius, each spine bearing six to nine simple branches. Outer and middle shell uneven, with hill-shaped protuberances and valleys between them; the connecting radial beams, which arise from the top of the protuberances of the middle shell, are inserted into the deepest part of the valleys of the outer shell. Radial proportion of the three spheres = 1: 3: 8. Outer medullary shell with small, irregular, roundish, or polygonal pores, not much broader than the bars; innermost shell with polygonal pores and very thin bars.

Diameter of the outer shell 0.28, middle 0.01, inner 0.033; length of the spines 0.07, breadth 0.004. [dimensions in mm]

References:

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


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Pityomma drymodes compiled by the radiolaria@mikrotax project team viewed: 17-3-2025

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=252048 Go to Archive.is to create a permanent copy of this page - citation notes



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