Kleithriasphaeridium porosispinum
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porosispinum Davey, 1982b, p.29-30, pl.10, figs.8-12. Holotype: Davey, 1982b, pl.10, figs.10-12. Originally (and now) Kleithriasphaeridium, subsequently Tityrosphaeridium. Lentin and Williams (1985, p.209) retained this species in Kleithriasphaeridium. Age: Late Kimmeridgian-Late Ryazanian.
Parent: Kleithriasphaeridium