Tetranguladinium Appendix A

TETRANGULADINIUM Yu Jingxian et al., 1983, p.68.  Genus representing zygospores of cyanobacteria.  Earlier authors considered this genus to represent acritarchs (Chen et al., 1988, p.33; Fensome et al., 1990, p.477) and dinoflagellate cysts (Batten and Lister, 1988, p.358–359).  Chen et al. (1988, p.34) and the authors of pre-2004 versions of this Index were incorrect in considering that Yu Jingxian et al. (1983) did not designate a holotype for the type of the genus: hence the genus and its type were validly published when proposed.  Type: Yu Jingxian et al., 1983, pl.30, fig.2, as Tetranguladinium conspicuum.

Parent: Subclass Peridiniphycidae Order uncertain Family uncertain

Species List:

*Tetranguladinium conspicuum Appendix A
Tetranguladinium cruciforme Appendix A
Tetranguladinium minqiaoense Appendix A
Tetranguladinium opimum Appendix A
Tetranguladinium rectangulatum Appendix A
Tetranguladinium reticulatum Appendix A