radiolaria - rads_cat - Phacostylus amphistylus radiolaria - rads_cat - Phacostylus amphistylus

CATALOG OF ORIGINAL DESCRIPTIONS: Phacostylus amphistylus 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 -> Phacostylus -> Phacostylus amphistylus
Other pages this level: P. amphipyramis, P. amphistylus, P. amphixiphus, P. caudatus, P. dellupi, P. originalis, P. vicinus

Phacostylus amphistylus

Citation: Phacostylus amphistylus Haeckel 1887
Taxonomic rank: species
Described on page(s) : p.430
Type specimens: pl.31, fig.12
Type age (chronostrat): [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Type locality: LM28
Type repository: No information given

Current identification:


Original Description

Disk with smooth surface, four times as broad as the outer, and twelve times as broad as the inner medullary shell. Pores regular, circular; twelve to fourteen on the radius of the disk. Margin of the disk simple, smooth, without spines and equatorial girdle. Both polar spines conical, longer than the diameter of the disk, furrowed at the base, and twice as broad as the inner medullary shell.

Size:
Diameter of the disk 0.16 to 0.18, of the outer medullary shell 0.045, of the inner 0.015; length of the polar spines 0.2, basal breadth 0.03.

Editors' Notes
Haeckel listed Phacostylus amphistylus under the subgeneric name Phacostylium, but did not include the subgeneric name in the species name.[comment from RadWorld database]

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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Phacostylus amphistylus compiled by the radiolaria@mikrotax project team viewed: 18-2-2025

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=262056 Go to Archive.is to create a permanent copy of this page - citation notes



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