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Chaetoceros furcellatus
Scientific classification
Domain: Eukaryota
(unranked): SAR
Superphylum: Heterokonta
Class: Coscinodiscophyceae
Suborder: Biddulphiineae
Family: Chaetocerotaceae
Ralfs in Pritchard 1861

Chaetocerotaceae is a diatom family (Bacillariophyta). This family comprise the three genera Attheya T. West, Bacteriastrum Shadbolt and Chaetoceros Ehrenberg.[1] Chaetoceros is perhaps the largest and most species rich genus of marine planktonic diatoms. The taxonomic status within Chaetocerotaceae at present is somewhat unclear.[2]


The cells have valves with long setae. Cells are often in unseparable chains, but may appear as solitary cells in some species. Chains are formed by fusion of silica between the setae. Endogenous resting spores are common and very different from normal vegetative cells.[1]


  1. ^ a b Tomas, Carmelo R., ed. (1997). Identifying Marine Phytoplankton. Academic Press. ISBN 978-0-08-053442-8. 
  2. ^ Rines, J.E.B.; Theriot, E.C. (2003). "Systematics of Chaetocerotaceae (Bacillariophyceae). I. A phylogenetic analysis of the family". Phycological research. 51 (2): 83–98. doi:10.1046/j.1440-1835.2003.00297.x.