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 -> Pylospira
Other pages this level: << < Pterocanium, Pterocodon, Pterocorys, Pterocorythium, Pterocyrtidium, Pteroperidium, Pteropilium, Pteroscenium, Pterosyringium, Pylobotrys, Pylocapsa, Pylodiscus, Pylolena, Pylonium, Pylosphaera, Pylospira, Pylospyris, Pylozonium

not figuredPylospira cymbium Haeckel 1887

Pylospira octopyle Haeckel 1887
= Pylospira octopyle
not figuredPylospira tetrapyle Haeckel 1887


Citation: Pylospira Haeckel 1887
Rank: genus
Type species: Pylospira octopyle Haeckel 1887 [designated by Campbell,1954, p.D100]
Described on page(s) : 697
Family (traditional): Pyloniidae

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Current identification/main database link: Pylospira Haeckel 1887

Original Description
Lithelida with double, trizonal or Larnacilla-shaped medullary shell; cortical shell subspherical or lentelliptical, constructed of a single or double spiral of the lateral girdle (or second cortical girdle); the spiral lamella revolving round the sagittal axis.

Etymology: From the Greek pylospira = spiral shell with internal gates"

Extra details from original publication
The genus Pylospira follows after Larcospira as the second genus of Larcospirida; but in this latter the spiral of the cortical shell is formed by the transverse girdle (or the first lattice-girdle of the Diplozonaria), whilst in Pylospira it is produced by the lateral girdle, or the second lattice-girdle of that group. Therefore Pylospira may be derived phylogenetically from Tetrapyle in the same manner as Larcospira from Amphipyle. Whilst in this latter the first cause of the spiral turning, the unequal growth of both girdle-wings, proceeds from the transverse girdle, in Pylospira it proceeds from the lateral girdle. One of its wings overgrows the other, turning around the sagittal axis. If the second wing do not become developed, the spiral remains simple and represents the subgenus Pylospirema; but if afterwards the second wing follow the example of the first and overgrow it from the other side, we reach the typical form of the second subgenus, Pylospironium, with a double spiral.
Sub-genera described:


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


Pylospira compiled by the radiolaria@mikrotax project team viewed: 15-4-2021

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