Cribrocentrum ornatum (Fig 1) together with its variants Cribrocentrum onustus (Fig 2) and Cribrocentrum callidus (Fig 3)
Reticulofenestra ornata Müller 1970b
Dictyococcites callidus Perch-Nielsen, 1971c [Holotype: 7.1µm; Type level: Middle Eocene] ring of elongate pores
Dictyococcites onustus Perch-Nielsen, 1971c [Holotype: 7.3µm; Type level: Middle Eocene]
Length: 10.0µm
Large (6.0-12.0µm) species of Cribrocentrum having a central area with a single cycle of large circular pores & a non-porous central field
Müller, C., 1970b. Nannoplankton-Zonen der Unteren-Meeresmolasse Bayerns. Geologica Bavarica 63, 107-118.
Perch-Nielsen, K., 1971c. Elektronenmikroskopische untersuchungen an Coccolithen und verwandten Formen aus dem Eozan von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 18(3), 1-76.
Reticulofenestra ornata
Müller, 1970
Middle Oligocene
Borehole Füssing 1, foreland molasse of the Bavarian Innviertel, Germany