radiolaria - rads_cat - Phormocyrtis costata radiolaria - rads_cat - Phormocyrtis costata

CATALOG OF ORIGINAL DESCRIPTIONS: Phormocyrtis costata 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 -> Phormocyrtis -> Phormocyrtis costata
Other pages this level: P. alexandrae, P. annosa, P. bucharica, P. carinata, P. costata, P. ligulata, P. longicornis, P. proxima, P. quadrata, P. striata, P. striata praexquisita, P. vasculum

Phormocyrtis costata

Citation: Phormocyrtis costata Haeckel 1887
taxonomic rank: species
Described on page(s) : p.1369
Type specimens: pl.69, fig.6
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

Shell smooth, with sharp collar, but indistinct lumbar stricture. Length of the three joints = 2: 5: 5, breadth = 2: 6: 6. Cephalis conical, with a stout pyramidal horn of twice the length. Thorax and abdomen together nearly cylindrical, constricted towards both poles, with thirty to forty longitudinal ribs, which are nearly parallel, vertical in the middle part, and convergent towards both poles; alternate with the same number of longitudinal rows of regular, circular pores. Mouth with a broad, hyaline, only slightly constricted peristome.

Length of the three joints, a 0.04, b 0.1, c 0.1; breadth, a 0.04, b 0.12, c 0.12.


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


Phormocyrtis costata compiled by the radiolaria@mikrotax project team viewed: 18-6-2024

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