A. S. Woodicard — Belgian Neozoic Fish-teeth. Ill 



species of Scapnnorhynchis merely by isolated teeth ; and the attempt 

 made by the present writer in the work cited to assign limits to 

 S. rhaphiodon is thus only provisional. However, teeth indistinguish- 

 able from those usually named S. rhaphiodon occur at Ciply, and 

 the species may therefore be recorded. 



It seems most probable that the teeth from Ciply described as 

 Odontaspis (" Lamna") elegans by MM. Houzeau, Briart, and Rutot,^ 

 also pertain to Scapanorhynchm. The present writer has only seen 

 the detached dental crowns, and they certainly bear much resemblance 

 to those of the well-known Lower Tertiary species; but these are 

 insufficient to establish as a fact the range of a species of Shark 

 from the Danian to the Lower Miocene. Very similar teeth from 

 France and the United States have also been described under the 

 names of Lamna Trigeri^ and Lnmna texana.^ The so-called Lamna 

 elegans from the Upper Cretaceous of Scandinavia is proved to be 

 erroneously determined by the circumstance that the inner face of 

 the teeth is smooth.* 



Odontaspis Bronni, Agassiz. 



1843. Lamna [Odontaspis) Bro7ini, L. Agassiz, Poiss. Foss. vol. ill. p. 297, 



pL xxxviia. figs. 8-10. 

 (?) 1843. Otodus serratus, L. Agassiz, ibid. p. 272, pi. xxxii. figs. 27, 28. 

 1852. Otodus and Lamna, P. Gervais, Zoo\. .at Pal. Francj. pi. Ixxvi. figs. 6, 8. 



1889. Odontaspis Bronni, A. S. Woodward, Catal. Foss. Fishes Brit. Mus. pt. i. 



p. 360. 



1890. Odontaspis acuta, J. "W. Davis, Trans. Roy. Dublin Soc. [2], vol. iv. p. 387, 



pi. xxxviii. figs. 21-24. 



This is a well-characterized species, so far as the dentition is con- 

 cerned, occurring in the uppermost Cretaceous horizons of France, 

 Holland, and Southern Scandinavia, and abundantly represented in 

 the Lower Danian of Ciply. An allied form also seems to occur 

 in the Oamaru System of New Zealand. The great interest of the 

 species consists in the fact, that its teeth differ very slightly from 

 those of Odontaspis Bidoti met with in the Lower Eocene both of 

 Belgium and Kent. It thus affords another instance of the striking 

 similarity existing between the latest Mesozoic and the earliest 

 Tertiary fish-remains. 



Odontaspis Soiizeani, sp. nov. PI. III. Figs. 7, 8. 



Teeth with slender, sharply-pointed crown and robust root ; outer 

 coronal face flattened, marked with numerous short vertical wrinkles 

 at its base-line, which is more or less arcuate ; inner coronal 

 face smooth ; a single pair of protninent, slender uncinate lateral 

 denticles, usually with a rudimentary denticle externally; inner 

 nutritive foramen of root not in groove, inconspicuous. Anterior 

 teeth (Fig. 7) exhibiting well-marked sigmoidal curvature, the 



1 A. Rutot, "Note sur 1' Extension de Lamna elegans, Ag., a travers les Terrains 

 Cretace et Tertiaire, Ann. Soc. Geol. Belg. vol. ii. (1875), p. 35. 



- H. Coquand, Descript. Geol., etc.. Depart. Charente, vol. ii. (1860), p. 98. 



3 F. Eoemer, Kreidebild. von Texas (1852), p. 29, pi. i. fig. 7. 



* J. W. Davis, Trans. Eoy. Dublin Soc. [2], vol. iv. (1890), p. 398, pi. xl. 

 figs. 11-17. 



