†family Quadragnostidae Howell (trilobite)

Trilobita - Agnostida - Quadragnostidae

Parent taxon: Agnostina according to A. R. Palmer and C. G. Gatehouse 1972

Sister taxa: Glaberagnostus, Grandagnostus, Hastagnostus, Megagnostus, Phoidagnostus, Skryjagnostus, Valenagnostus

Subtaxa: none

Ecology: slow-moving epifaunal detritivore

Distribution: there are no occurrences of Quadragnostidae in the database

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