Tityrosphaeridium callosum
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"?callosum" (Morgenroth, 1966a, p.21, pl.4, figs.8-10) Sarjeant, 1981, p.121. Holotype: Morgenroth, 1966a, pl.4, figs.9-10. NOW Cordosphaeridium?. Originally Cordosphaeridium, subsequently (and now) Cordosphaeridium?, thirdly Tityrosphaeridium?. Questionable assignment: Sarjeant (1981, p.121). Age: Early Eocene.
Parent: Tityrosphaeridium