Orthonema tricingulatum (FOSSIL) Erwin, 1988 † USA, New Mexico, Otero
Orthonema youngianum (FOSSIL) J. Donald, 1889 †
Orthonema zionensis (FOSSIL) A. Nützel, 1998 † Texas
Yochelsonistylus felixi (FOSSIL) A. Nützel & Nakazawa,2012 † Japan, Gifu
Yochelsonistylus seussae (FOSSIL) A. Nützel & Nakazawa,2012 † Japan, Gifu