Palaeotetradinium natans

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"natans" (Cookson and Eisenack, 1962b, p.496, pl.7, figs.12-13) Lentin and Williams, 1985, p.272.  Holotype: Cookson and Eisenack, 1962b, pl.7, fig.13.  Combination not validly published: basionym not fully referenced.  Originally Rhombodella (Appendix A), subsequently Palaeotetradinium (combination not validly published).  Taxonomic senior synonym: Palaeohystrichophora (now Rhombodella) paucispina, according to Stover and Evitt (1978, p.71).  Lentin and Williams (1985, p.272) inadvertently proposed this combination.  Age: Aptian-Albian.

Parent: Palaeotetradinium