Australian Biological Resources Study

Australian Faunal Directory


Regional Maps

Phylum CERCOZOA Cavalier-Smith, 1998

Compiler and date details

Jan 2015 - Checked by Peter O’Donoghue, The University of Queensland

July 2014 - Data on naked amoebae provided by Brett and Moira Robinson, Adelaide

July 2010 - Data on testate amoebae provided by Peter O’Donoghue, entered in AFD by ABRS


Cercozoans form a clade in the group Rhizaria in the supergoup SAR. They are a diverse assemblage lacking distinctive morphological or behavioural characters, but are strongly supported by molecular phylogenetic studies. Members comprise amoebae and flagellates that feed by means of filose pseudopods (filopodia) and one major group is the Imbricatea (amoebae with secreted siliceous scales). The Cercozoa is sister to the Retaria containing the Foraminifera (amoebae with branching/anastomosing filoipodia (= reticulopodia)).

[For higher taxonomic considerations and characters, see Adl et al. 2012.]


History of changes

Note that this list may be incomplete for dates prior to September 2013.
Published As part of group Action Date Action Type Compiler(s)
19-Feb-2015 CERCOZOA Cavalier-Smith, 1998 06-Jul-2015 MODIFIED
19-Mar-2012 ADDED