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Compositosphaeridium costatum

"*Compositosphaeridium costatum" (Davey and Williams, 1966b, p.62, pl.10, fig.4) Dodekova, 1974, p.26.

TYPE: Holotype: Davey and Williams, 1966b, pl.10, fig.4; Stancliffe and Sarjeant, 1990, pl.3, fig.1.

HISTORY: Originally Hystrichosphaeridium, subsequently Cordosphaeridium, thirdly Compositosphaeridium Dodekova.

SYNONYM(S): Taxonomic senior synonym: Hystrichosphaeridium (now Compositosphaeridium) polonicum, according to Beju (1971, p.292).

COMMENTS: The nomenclatural type of the genus Compositosphaeridium Dodekova remains the holotype of Compositosphaeridium costatum.

AGE: Oxfordian.


Infraspecific taxa:


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