Peronopsidae

Peronopsidae; Temporal range:
	Itagnostus interstrictus, until recently known as Peronopsis interstricta, from the Wheeler Shale, Utah
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Trilobita
Order:	Agnostida
Suborder:	Agnostina
Superfamily:	Agnostoidea
Family:	Peronopsidae; Westergård, 1936
genera
	Acadagnostus; Archaeagnostus; Baltagnostus; Diplorrhina; Eoagnostus; Gratagnostus; Iniosheniscus; Itagnostus; Micagnostus; Pentagnostus; Peronopsis; Peronopsella; Quadragnostus; Redeagnostus;
Synonyms
	Archaeagnostinae, Quadragnostinae

The Peronopsidae (which may also be called peronopsids) comprise the earliest family of the Agnostina suborder. Species of this family occurred on all paleocontinents. The earliest representatives of this family first occur just before the start of the Middle Cambrian, and the last disappeared just after the start of the Upper Cambrian.

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