|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|D. H. Erwin et al. 2011||Triradialomorphs (Trilobozoa?) are a monophyletic clade characterized by three plains of symmetry (Anfesta; Triforillonia) or by the spiral rotation of three independent arm-like structures (Tribrachidium, Albumares). Each branch is typically composed of smaller branching structures.|