Gonyaulax cladophora subsp. extensa Appendix B

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"subsp. extensa" Klement, 1960, p.36-37, pl.4, figs.1-4; text-fig.16.  Holotype: Klement, 1960, pl.4, figs.1-3; Jan du Chêne et al., 1986a, pl.95, figs.4-5.  NOW Rhynchodiniopsis cladophora subsp. extensa.  Originally Gonyaulax cladophora subsp. extensa, subsequently Gonyaulacysta cladophora subsp. extensa, thirdly Hystrichogonyaulax cladophora subsp. extensa, fourthly (and now) Rhynchodiniopsis cladophora subsp. extensa.  Taxonomic senior synonym: Gonyaulax (as Rhynchodiniopsis) cladophora subsp. cladophora, by implication in Brenner (1988, p.72), who listed this subspecies as a taxonomic junior synonym of Rhynchodiniopsis cladophora - however, Lentin and Williams (1993, p.566) retained Gonyaulax (as Rhynchodiniopsis) cladophora subsp. extensa.  Age: Early Kimmeridgian. Parent: Gonyaulax cladophora