†Ishigaum De Wever and Caridroit 1984 (radiolarian)
Radiolaria - Latentifistularia - Cauletellidae
Parent taxon: Cauletellidae according to P. De Wever et al. 2001
Sister taxa: Cauletella, Foremanhelena, Praedeflandrella, Triplanospongos
Subtaxa: Ishigaum obesum, Ishigaum trifustis
Ecology: passively mobile planktonic omnivore