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Baltisphaeridium striatoconum
Baltisphaeridium striatoconum, (Deflandre and Cookson, 1955), Downie and Sarjeant, 1965
Now Conosphaeridium. Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Litosphaeridium?, fourthly (and now) Conosphaeridium. This combination was not validly published in Downie and Sarjeant, 1963 since these authors did not fully reference the basionym.
Holotype: Deflandre and Cookson, 1955, text-fig.36
Age: Middle Senonian
Now Conosphaeridium. Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Litosphaeridium?, fourthly (and now) Conosphaeridium. This combination was not validly published in Downie and Sarjeant, 1963 since these authors did not fully reference the basionym.
Holotype: Deflandre and Cookson, 1955, text-fig.36
Age: Middle Senonian