†Robulus Montfort 1808 (foram)
Parent taxon: Nodosariinae according to J. M. Dorreen 1948
Sister taxa: Alfredosilvestris, Awhea, Botuloides, Chrysalogonium, Citharina, Cribronodosaria, Dentalinoides, Dentalinopsis, Enatiodentalina, Frondiculariinae, Grigelis, Kriptoseptida, Laevidentalina, Lagenoglandulina, Lenticulininae, Lingulininae, Marginulina, Marginulinopsis, Mucronina, Nodomorphina, Pandaglandulina, Planularia, Pseudonodosaria, Pyramidulina, Rectoglandulina, Svenia, Darbyella, Dentalina, Vaginulina, Frondicularia, Lingulina, Nodosaria, Hyalinonetrion, Procerolagena, Anturina, Lagena
Subtaxa: Robulus gyroscalprum
Ecology: stationary semi-infaunal deposit feeder