radiolaria - rads_cat - Spirocyrtis scalaris radiolaria - rads_cat - Spirocyrtis scalaris

CATALOG OF ORIGINAL DESCRIPTIONS: Spirocyrtis scalaris 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 -> S -> Spirocyrtis -> Spirocyrtis scalaris
Other pages this level: S. cornutella, S. diplospira, S. elegans, S. greeni, S. gyroscalaris, S. hemispira, S. hollisi, S. holospira, S. merospira, S. parvaturris, S. proboscis, S. scalaris, S. submerospira, S. subscalaris, S. subtilis

Spirocyrtis scalaris

Citation: Spirocyrtis scalaris Haeckel 1887
taxonomic rank: species
Described on page(s) : p.1509
Type specimens: pl.76, fig.14
Type age (chronostrat): [presumably Quaternary though some forms reported from these stations appear to be Tertiary]
Type locality: LM25; LM28; LM30; LM31
Type repository: No information given

Current identification/main database link: Spirocyrtis scalaris Haeckel 1887

Original Description

Shell conical, gradually dilating towards the wide open mouth, with ten to twelve spiral convolutions, which correspond to the same number of short and broad chambers or joints, gradually increasing in breadth; all joints form together a spirally winding staircase. The length or height of the single joints or stairs is about equal, and each bears four or five transverse rows of small, square pores. Cephalis flat, cap-shaped, with two or three short divergent horns.

Length of the shell (with ten joints or turnings) 160µm, length of each joint (on an average) 16µm; breadth of the third joint 40µm, of the fifth joint 70µm, of the tenth joint 100µm.

Editors' Notes
Haeckel listed Spirocyrtis scalaris under the subgeneric name Spirocyrtidium, but did not include the subgeneric name in the species name.[comment from RadWorld database]


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


Spirocyrtis scalaris compiled by the radiolaria@mikrotax project team viewed: 18-6-2024

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