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Adnatosphaeridium perforatum

"Adnatosphaeridium perforatum" (Alberti, 1961, p.37, pl.9, fig.14) Riley and Sarjeant, 1972, p.3.

TYPE: Holotype: Alberti, 1961, pl.9, fig.14.

HISTORY: Originally Cannosphaeropsis, subsequently Adnatosphaeridium, thirdly Rigaudella.

SYNONYM(S): Taxonomic senior synonym: Cannosphaeropsis (now Rigaudella) filamentosa, according to Stancliffe and Sarjeant (1990, p.206).

AGE: ?Callovian.


Infraspecific taxa:


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