Fig. 4 in Valanginian Radiolarians Of Ne Sardinia (Italy) In The Frame Of The Weissert Event

Fig. 4 Ammonites from the lower Upper Valanginian (Verrucosum Zone) (Siniscola Marl, S'Ozzastru area). a, c, d - Neocomites platycostatus Sayn, 1907 (MGP-PD 31531, 31534). b, e, f- Neocomites neocomiensis (d'Orbigny, 1841) (MGPPD 31532, 31535, 31533). The specimens are housed and catalogued in the Geological and Palaeontological Museum of the Padova University (MGP-PD). (From Bottini et al., 2018).