Castanidium

Castanidium
	Illustration from Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Part III, Ernst Haeckel (1834-1919), engravings by Adolf Giltsch (1852-1911), 1887. Plate 113. Castanellida. ; Fig. 2. Castanidium moseleyi, n. sp., × 80 ; Fig. 5. Castanidium murrayi, n. sp., × 100 ; Fig. 7. Castanidium buchanani, n. sp., × 100
Scientific classification
Domain:	Eukaryota
(unranked):	SAR
(unranked):	Rhizaria
Phylum:	Cercozoa
Class:	Phaeodaria
Order:	Phaeogromia or Phaeocalpida
Family:	Castanellidae
Genus:	Castanidium; Haeckel, 1879
Species
	Castanidium elegans Schmidt, 1908; Castanidium haeckeri Schröder; Castanidium longispinum Haecker; Castanidium moseleyi Haeckel, 1887; Castanidium spinosum Schröder; Castanidium vanhoeffeni Schröder; Castanidium variabile Borgert, 1890;

Castanidium is a genus of cercozoans in the family Castanellidae.