Spiniferites subgenus Hafniasphaera

"SPINIFERITES subgenus HAFNIASPHAERA" (Hansen, 1977, p.13–14) Quattrocchio and Sarjeant, 2003, p.;140.  Emendation: Fensome et al., 2009, p.34, as Hafniasphaera.  NOW Hafniasphaera.  Originally (and now) Hafniasphaera, subsequently Spiniferites subgenus Hafniasphaera.  Taxonomic senior synonym: Spiniferites, according to Stover and Williams (1987, p.117) — however, Edwards (1996, p.989) retained Hafniasphaera.  Taxonomic junior synonym: Rivernookia, according to Lentin and Williams (1985, p.311).  Fensome et al. (2009, p.34) retained Hafniasphaera at generic rank.  Type: Hansen, 1977, fig.18A, as Hafniasphaera hyalospinosa.