imbricatea imbricatea imbricatea is a class of rhizaria characterised by silica scales. it is sometimes described as "imbricatea/silicofilosea", due to the similarity of those two groupings. imbricatea is divided into the orders euglyphida and thaumatomonadida. imbricatea euglypha sp. scientific classification domain: eukaryota clade: diaphoretickes clade: sar phylum: cercozoa superclass: ventrifilosa class: imbricateacavalier-smith, 2003 orders perlofilida spongomonadida rotosphaerida thaumatomonadida discocelida discomonadida zoelucasida variglissida marimonadida euglyphida synonyms silicofilosea adl et al. 2005 emend. adl et al. 2012 phylogeny phylogeny based on cavalier-smith & chao 2012 silicofilosea placoperla perlatia perlofilida cavalier-smith 2012 spongomonadida hibberd 1983 emend. karpov 1990 placofila rotosphaerida rainer 1968 thaumatomonadida shirkina 1987 placonuda discocelida cavalier-smith 1997 discomonadida cavalier-smith 2014 euglyphia euglyphida copeland 1956 emend. cavalier-smith 1997 nudisarca variglissida cavalier-smith 2014 marimonadida cavalier-smith & bass 2011