410 Davis — On the Fossil Fish of the Cretaceous Formations of Scandinavia. 



Carcharodon rondeletii^ Mullee and Henle. 



(PI. XLI., fig. 14.) 



Carcharodon rondeletii, 



Carcharodon sulcidens, 

 Carcharodon sulcidens, 



Carcharodon sulcidens, 



Carcharodon tornabene, 

 Carcharodon etruscus. 



Carcharodon rondeletii. 



. MuLLER AND Henle, 1841. " Sjst, Bcschreib. 



Plagiostom.," p. 70. 

 . Agassiz, L., 1843. " Poiss. Foss.," vol. iii., 



p. 254, pi. XXX. a, figs. 3—7. 

 . GiBBES, R. W., 1848. " Journ. Acad. Nat. Sci. 



Philad.," ser. ii., vol. i., p. 147, pi. xxi., 



figs. 52, 53. 

 . Gemmellaro, G. G., 1857. " Atti. Acad. 



Gioenia Sci. Nat.," ser. ii., vol. xiii., 



p. 308, pi. iv.a, figs, 5-7. 

 . Gemmellaro, G. G., 1857. Tom. cit., p. 309, 



pi. i.ff, fig. 12. 

 . Lawley, R., 1881. " Studi comp. Pesci Foss. 



coi viventi gen. Carcharodon, Oxyrhina, 



6 Galeocerdo.," p. 17, pis. ii., in., v. 



(Carcharodon), pi. iv. (Carcharodon), 



fig. 2. 

 . Woodward, A. S., 1889. ''Cat. Foss. Fishes 



in Brit. Museum," pt. i., p. 420. 



A portion of a tooth, probably belonging to this species, has been found in the 

 Chalk at Faxe, and is now in the collection of the Mineralogical Museum at the 

 University of Copenhagen. A part of the specimen has been cut away, appa- 

 rently for the purpose of making microscopical sections ; the remaining part 

 exhibits the left half of the crown and root. The crown is 0'03m. in height; 

 the length of the margin of the tooth, including the root, is 0-045 m. The crown 

 is thin and compressed ; the outer surface is slightly convex, almost flat, with the 

 apex slightly curved outwards. The inner surface is convex. The crown is 

 widely expanded, its breadth equalling its height. The margin is serrated ; there 

 is no evidence of lateral denticles. The root, like the crown, is compressed ; 

 spongy in structure. The inferior surface concave, and conforming in outline to 

 the base of the crown. 



This specimen agrees in all essential particulars with the specimens described 

 by L. Agassiz as Carcharodon stdcidens, Ag., from the Tertiary strata of Italy. 



