Nexosispinum

NEXOSISPINUM Davey, 1979b, p.557–558.  Taxonomic senior synonym: Kiokansium, according to Stover and Williams (1987, p.163) — however, Prössl (1990, p.104) retained Nexosispinum.  Type: Davey, 1979b, pl.6, fig.5, as Nexosispinum hesperus.

Parent: Family Gonyaulacaceae Subfamily uncertain

Species List:

"Nexosispinum complicatum"
*Nexosispinum hesperus
Nexosispinum minimum
Nexosispinum vetusculum