Fig. 2 in A new Metapolygnathus platform conodont species and its implications for Upper Carnian global correlations

Fig. 2. SEM photographs of gondolellid conodonts. A. Holotype of Paragondolella noah (Hayashi, 1968). B. Holotype of Metapolygnathus communisti Hayashi, 1968 from the original plates of Hayashi (1968: 79, pl. 3). Both specimens are from chert at the base of the Adoyama Formation within a mixed Middle–Upper Triassic fauna (Ashio Mountains, Central Japan). C–J. Metapolygnathus praecommunisti sp. nov. from the Upper Triassic of "Calcari con Selce", Pizzo Mondello section (Sicani Mountains, Sicily). C. Holotype (sample NA12). D, E. Asymmetric morphotypes, samples NA14 and NA18 respectively. F, G. Rounded morphotypes, samples PM11A and NA19 respectively. H, I. More advanced forms with short platform (sample NA19). J. Advanced form, NA19 (from Mazza et al. 2010).