The Chain of Life in Geological Time / A Sketch of the Origin and Succession of Animals and Plants

by Sir John William Dawson

Fig. 110.—Dental plate of Conchodus plicatus (Dn.). Coal-formation of Nova Scotia. Acadian Geology.

Fig. 111.—Dental plate of Ceratodus Barrandii. Coal-formation of Bohemia. After Fritsch.

Fig. 112.—Dental plate of Ceratodus serratus. From the Trias.

Fig. 113.—Jaws of Dinichthys Hertzeri (Newberry). Laterally compressed; one-sixth natural size.