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Adnatosphaeridium speciosum

Adnatosphaeridium? speciosum (Alberti, 1961, p.37, pl.9, fig.13) Stancliffe and Sarjeant, 1990, p.202.

TYPE: Holotype: Alberti, 1961, pl.9, fig.13; Stancliffe and Sarjeant, 1990, pl.5, fig.6.

HISTORY: Originally Cannosphaeropsis, subsequently Polystephanephorus, thirdly Cannosphaeropsis?, fourthly (and now) Adnatosphaeridium?. Questionable assignment: Stancliffe and Sarjeant (1990, p.202).

AGE: Bathonian-Callovian.


Infraspecific taxa:


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