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Opsidiscus Westergard 1949 (trilobite)

Trilobita - Agnostida - Eodiscidae

PaleoDB taxon number: 19285

Synonym: Aulacodiscus Westergard 1946 [replaced name] (taxon 339058)

Parent taxon: Eodiscidae according to H. B. Whittington et al. 1997

Sister taxa: Dawsonia, Eodiscus, Helepagetia, Macannaia, Pagetia, Pagetides, Sinopagetia

Subtaxa: Opsidiscus haimantensis

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Ecology: slow-moving nektonic suspension feeder