Tityrosphaeridium porosispinum
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"porosispinum" (Davey, 1982b, p.29-30, pl.10, figs.8-12) Norris and Jux, 1984, p.160. Holotype: Davey, 1982b, pl.10, figs.10-12. NOW Kleithriasphaeridium. Originally (and now) Kleithriasphaeridium, subsequently Tityrosphaeridium. Age: Late Kimmeridgian-Late Ryazanian.
Parent: Tityrosphaeridium
