†Quadragnostus Howell 1935 (artiopod)
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Artiopoda - Agnostida - Peronopsidae
Parent taxon: Peronopsidae according to E. B. Naimark and T. V. Pegel 2017
See also Jell and Adrain 2002, Palmer 1954 and Sepkoski 2002
Sister taxa: Archaeagnostus, Diplorrhina, Gratagnostus, Itagnostus, Micagnostus, Pentagnostus, Peronopseinae, Peronopsella, Peronopsis, Phalacrominae, Redeagnostus
Subtaxa: Quadragnostus clarus Quadragnostus depressa
Ecology: nektonic suspension feeder
Distribution:
• Cambrian of the Russian Federation (1 collection), Sweden (2), United States (2: Utah, Vermont)
Total: 5 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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