WAcanthohoplites
WAcimetopus
WAnningasaura
WArchidesmus
WArthropleura
WAteleaspis
WAuchenaspis
WAvalonnectes
WBaculites
WBernissartia
WBrachyopterus
WCalappilia
WCaleidocrinus
WChondrenchelys
WChondrosteus
WCnemidopyge
WCobboldites
WComposita
WCondylopyge
WCothurnocystis
WCummingella
WCyclopygidae
WDakosaurus
WDidrepanon
WDrepanopterus
WDuctina
WEophrynus prestvicii
WFavosites
WFritzolenellus
WGeragnostus
WGracilocyon
WGryphaea
WHalysites
WHardieopterus
WHolonema
WHomosteus
WHoploparia longimana
WLemmysuchus
WLeptaena
WLeptolepis
WLiparoceras
WNummulite
WOlenus (trilobite)
WOphthalmosaurus
WOsteorachis
WPalaeosoma
WPhalagnostus
WPlanolites
WPlatystrophia
WPleuroctenium
WPlutonides
WPricyclopyge
WRafinesquina
WRhizodus
WSthenarosaurus
WSymphysops
WTrimerocephalus
WTrinodus