Trilobita - Agnostida - Phalacromidae

Parent taxon: Phalacromidae according to G. K. Ergaliev and F. G. Ergaliev 2008

Sister taxa: Lisogoragnostus, Munagnostus, Phalacroma, Toragnostus

Subtaxa: Phaldagnostus obsurdus, Phaldagnostus orbiformis

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Type: Phaldagnostus orbiformis

Ecology: slow-moving nektonic suspension feeder