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Polycystine

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Polycystine
Skeleton of a polycystine
Skeleton of a polycystine
Scientific classification Edit this classification
Domain: Eukaryota
Clade: Diaphoretickes
Clade: SAR
Phylum: Retaria
Subphylum: Radiolaria
Class: Polycystina
Ehrenberg, 1838, emend. Haeckel, 1887
Orders[1]

The polycystines are a group of radiolarians. They include the vast majority of the fossil radiolaria, as their skeletons are abundant in marine sediments, making them one of the most common groups of microfossils. These skeletons are composed of opaline silica. In some it takes the form of relatively simple spicules, but in others it forms more elaborate lattices, such as concentric spheres with radial spines or sequences of conical chambers.

An illustration of polycystines of the subclass Spumellaria, from Ernst Haeckel's 1904 Kunstformen der Natur (Artforms of Nature)

References

  1. ^ WoRMS (2019). Polycystina. Accessed at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=235740 on 2019-01-08
  • Data related to Polycystinea at Wikispecies
  • "Systematics of the Radiolaria".
  • Radiolaria.org
  • "Polycystine radiolarians".


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