Rhizaria Temporal range: Neoproterozoic - Recent
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Ammonia tepida (Foraminifera) | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Clade: | Diaphoretickes |
Clade: | TSAR |
Clade: | SAR |
(unranked): | Rhizaria Cavalier-Smith, 2002 |
Phyla | |
Cercozoa |
The Rhizaria are a supergroup of mostly unicellular eukaryotes.[1][2] A multicellular form has recently been described.[3]
This supergroup was proposed by Cavalier-Smith in 2002.[4] It has many species. They vary considerably in form, but for the most part they are amoeba-like with pseudopods. Many produce shells or skeletons, which may be quite complex in structure. They make up the vast majority of protozoan fossils. Nearly all have mitochondria with folds.
There are three main groups of Rhizaria:[5]