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Hystrichosphaeridium collum

Hystrichosphaeridium? collum Tasch in Tasch et al., 1964, p.194, pl.2, figs.7,16.

TYPE: Holotype: Tasch et al., 1964, pl.2, figs.7,16.

HISTORY: Originally Hystrichosphaeridium, subsequently (and now) Hystrichosphaeridium?. Questionable assignment: Stover and Evitt (1978, p.56), as a problematical species.

AGE: Albian.


Infraspecific taxa:


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