Fig. 10. Reference specimens from Laurussia. A. Diclitodus scitulus Davis, 1883 in Chondrichthyan remains from the Lower Carboniferous of Muhua, southern China

Fig. 10. Reference specimens from Laurussia. A. Diclitodus scitulus Davis, 1883, holotype (BMNH P.49629), from the Carboniferous Limestone, Richmond, Yorkshire, England, in labial view. B. "?Psephodus laevissimus", specimen BMNH P.9914, from the Lower Limestone shales bone bed, Avon Gorge near Bristol, in oral view. C. Chomatodus davisi (Woodward, 1889), a specimen of the type series (BMNH P.2656), from the Viséan Mountain Limestone of Armagh, Northern Ireland, in lingual view. D. Tamiobatis wachsmuthi (St. John and Worthen, 1875), a specimen of the type series (MCZ 6371), from the Kinderhookian of Burlington, Iowa, in labial view. E. Deltodus sublaevis (Agassiz, 1838), specimen BGS 5964, from the Viséan Mountain Limestone of Armagh, Northern Ireland, in oral view (left side broken). F.?Goodrichthys eskdalensis (Moy−Thomas, 1936), a tooth from the specimen NMS 2000.14.2, from the lower Viséan of Glencartholm, Dumfriesshire, Scotland, in labial view. G. Chomatodus linearis (Agassiz, 1838), specimen BMNH P.2653, from the Lower Carboniferous Yoredale Beds, Richmond, Yorkshire, England, in oral view. H. Sibyrhynchus denisoni Zangerl and Case, 1973 (FMNH PF6408), palatal tooth plates.