Trilobita - Proetida

Parent taxon: Proetoidea according to R. M. Owens 2003

Sister taxon: Proetidae

Subtaxa: Archegoninae, Bollandiinae, Cummingellinae, Ditomopyginae, Thaiaspidinae, Weaniinae

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Ecology: fast-moving low-level epifaunal deposit feeder