CATALOG OF ORIGINAL DESCRIPTIONS: Zygartus chrysalis 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 -> Z -> Zygartus -> Zygartus chrysalis
Other pages this level: Z. chrysalis, Z. doliolum

Zygartus chrysalis

Citation: Zygartus chrysalis Haeckel 1887
Rank: species
Type locality: LM121; LM25; LM28; LM30; LM31
Type age (chronostrat): [presumably Quaternary though some forms reported from these stations appear to be Tertiary]
Type specimens: pl.40, fig.13
Type repository: No information given
Described on page(s) : p.401

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Current identification:


Original Description
Inner cortical shell composed of six to twenty (commonly eight to twelve) chambers of different size and form. Both proximal chambers nearly hemispherical, with spiny surface and subregular, circular pores, three to four times as broad as the bars. All following chambers cap-like, tapering towards both poles, with more irregular, roundish pores, with a circle of ten to twelve larger square pores at the base. Middle cortical shell with smaller roundish pores. Outer cortical shell with larger polygonal, quite irregular pores. Both medullary shells lenticular. Polar tubes conical or cylindrical with conical apex, of very variable length, sometimes not longer than one internal chamber, at other times twice to four times as long (in the figured specimen not fully developed, as also a part of the shells). Differs from Zygocampe chrysalis only by the production of polar tubes.

Size: Length of the six-chambered inner cortical shell 0.25, of the middle 0.3, of the outer 0.35; greatest breadth of the first 0.07, of the second 0.11, of the third 0.14; other measures the same as in Zygocampe chrysalis; length of the tubes 0.05 to 0.12 or more.

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


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Zygartus chrysalis compiled by the radiolaria@mikrotax project team viewed: 3-3-2021

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