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