Diacrocanthidium costatum Appendix A

?costatum Habib and Knapp, 1982, p.366, pl.11, figs.1-3.  Holotype: Habib and Knapp, 1982, pl.11, figs.1,3.  Questionable assignment: Habib and Knapp (1982, p.366).  Age: Early Hauterivian.

Parent: Diacrocanthidium