Hafniasphaera

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HAFNIASPHAERA Hansen, 1977, p.13-14.  Originally (and now) Hafniasphaera, subsequently Spiniferites subgenus Hafniasphaera.  We herein retain Hafniasphaera as a genus on the basis of its distinctive morphology.  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).  Type: Hansen, 1977, fig.18A, as Hafniasphaera hyalospinosa.

Parent: Subfamily Gonyaulacoideae

Species List: