Ataxiodinium elongatum

"elongatum" Zevenboom and Santarelli in Zevenboom, 1995, p.141–142, pl.1, figs.7–12. Holotype: Zevenboom, 1995, pl.1, figs.7–9. Name not validly published: considered a manuscript name by the authors. Taxonomic senior synonym: Ataxiodinium zevenboomii, according to Head (1997, p.171–172). Age: ?late Miocene–early Pliocene.