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Pterospermella spinosa
Pterospermella spinosa (Clarke and Verdier, 1967) Eisenack et al., 1973
NOW Whitecliffia. Originally Pterospermopsis (Acritarch), subsequently Pterospermella (Acritarch), thirdly Thalassiphora?, fourthly (and now) Whitecliffia.
Taxonomic junior synonym: Hexagonifera perforata (name not validly published), according to Slimani (2001a, p.194).
Holotype: Clarke and Verdier, 1967, pl.17, fig.1
Age: Senonian
NOW Whitecliffia. Originally Pterospermopsis (Acritarch), subsequently Pterospermella (Acritarch), thirdly Thalassiphora?, fourthly (and now) Whitecliffia.
Taxonomic junior synonym: Hexagonifera perforata (name not validly published), according to Slimani (2001a, p.194).
Holotype: Clarke and Verdier, 1967, pl.17, fig.1
Age: Senonian