Polysphaeridium caminuspinum

"?caminuspinum" (Wall, 1965a, p.165, pl.9, fig.4) Riley and Sarjeant, 1972, p.3.  Holotype: Wall, 1965a, pl.9, fig.4.  NOW Beaumontella?.  Originally Hystrichosphaeridium, subsequently Polysphaeridium?, thirdly Dapsilidinium?, fourthly (and now) Beaumontella?.  Questionable assignment: Riley and Sarjeant (1972, p.3).  Taxonomic junior synonym: Cleistosphaeridium mojsisovicsii, according to Below (1987a, p.70).  Age: early Sinemurian.

Parent: Polysphaeridium