Tityrosphaeridium porosispinum

"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