WWheeler Shale
WAlalcomenaeus
WAnomalocaris
WAsaphiscus
WBathyuriscus
WBranchiocaris
WCanadaspis
WCedaria
WChancelloria
WChoia
WCothurnocystis
WDiagoniella
WEldoniaWElrathia
WEmeraldella
WGogia
WHallucigenia
WIsoxys
WKootenia
WLeanchoilia
WMargaretia
WMarpolia
WNaraoia
WOlenoides
WOttoia
WPelagiellidae
WPeronopsis
WPtychagnostus
WPtychagnostus atavus
WSelkirkia
WSidneyia
WSkeemella
WTuzoia
WWaptia
WWiwaxia