Fig. 6. Thrinacodus incurvus ferox morphotype. Specimens TCD.36792 and TCD.36801 in Early Carboniferous chondrichthyan Thrinacodus from Ireland, and a reconstruction of jaw apparatus

Fig. 6. Thrinacodus incurvus ferox morphotype. Specimens TCD.36792 and TCD.36801 are from the Kilbride Limestone Formation, Polygnathus mehli conodont Zone, Ivorian (probably Freyrian), late Tournaisian. Specimen TCD.36803 is from the Lyraun Cove Shale Member of the Porter's Gate formation Polygnathus inornatus conodont Zone, Hastarian, Tournaisian. Specimens TCD.36804 and TCD.36805 are from the Upper Ballysteen Limestone Polygnathus mehli conodont Zone, Ivorian (pre−Freyrian), late Tournaisian. A. TCD.36801 in dorso−lateral (A1), dorso−lateral (A2), lateral (A3), and labial (A4) views. B. TCD.36803 in dorsal (B1) and lateral view (B2). C. TCD.36804 in dorsal view. D. TCD.36805 in dorsal (D1) and lingual (D2) views. E. TCD.36792 in dorso−lingual view. Scale bars 200 µm.