Polysphaeridium deflandrei
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"?deflandrei" (Valensi, 1947, p.817; text-fig.3) Davey and Williams, 1969, p.6. Holotype: Valensi, 1947, text-fig.3; Fauconnier and Masure, 2004, pl.21, figs.1–4. NOW Dapsilidinium?. Originally Hystrichosphaeridium, subsequently Polysphaeridium?, thirdly (and now) Dapsilidinium?. Questionable assignment: Davey and Williams (1969, p.6). This combination, as a qustionable assignment, was not validly published in Davey and Williams (1966b, p.95), since these authors did not fully reference the basionym. Age: Middle Jurassic.
Parent: Polysphaeridium