Trabeculidium quinquetrum
From dinoflaj2
*quinquetrum Duxbury, 1980, p.133-134, pl.9, figs.1-2,5. Holotype: Duxbury, 1980, pl.9, fig.2; Fensome et al., 1995, fig.2 - p.1729. Originally (and now) Trabeculidium, subsequently Nematosphaeropsis. Lentin and Williams (1993, p.649) retained this species in Trabeculidium. Age: mid Barremian.
Parent: Trabeculidium