†Weymouthia Raymond 1913 (trilobite)
Trilobita - Agnostida - Weymouthiidae
Parent taxon: Weymouthiidae according to H. B. Whittington et al. 1997
Sister taxa: Abakolia, Acidiscus, Acimetopus, Analox, Bathydiscus, Bolboparia, Cephalopyge, Cobboldites, Leptochilodiscus, Mallagnostus, Runcinodiscus, Serrodiscus, Tannudiscus
Subtaxa: Weymouthia nobilis
Ecology: slow-moving nektonic suspension feeder