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Polystephanephorus speciosus

"Polystephanephorus speciosus" (Alberti, 1961, p.37, pl.9, fig.13) Riley and Sarjeant, 1972, p.3.

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

HISTORY: NOW: Adnatosphaeridium?. Originally Cannosphaeropsis, subsequently Polystephanephorus, thirdly Cannosphaeropsis?, fourthly (and now) Adnatosphaeridium?.

AGE: Bathonian-Callovian.


Infraspecific taxa:


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