WAcaste (trylobit)
WAcastellina
WAfrops
WBalizoma
WBolbochasmops
WCalymene
WCeraurus
WChasmops
WCheirurus
WChotecops
WCrotalocephalus
WDalmanites
WDeiphon
WDiacalymene
WDrotops
WDuctina
WEldredgeops
WEncrinurus
WFlexicalymene
WFrammia
WGravicalymene
WHomalonotus
WKainops
WKtenoura
WNieszkowskia
WPaciphacops
WPhacops
WSphaerexochus
WTrimerocephalus