1903.] Hay, Cretaceous Fishes from Mount Lebanon, Syria. 397 



Class ELASMOBRANCHIL 



LAMNID^. 

 Otodus sulcatus Geinitz. 

 Plate XXVI, Figures 3 and 4. 



Otodus sulcatus Geinitz (H. B.), Char. Schicht. u. Petrefakt. sachs.- 

 bolim. Kreidegeb., Nachtr., 1843, p. 5, pi. iv, fig. 2. 



Lamna sulcata Woodward (A. S.), Cat. Foss. Fishes, i, 1889, p. 398. 

 (Synonomy and Hteratvire.) 



In the collection there is a single tooth of a shark, and this 

 I refer to the above species. The number of the tooth is 

 4508 (3867). 



The height of the crown has been about 15 mm., but the 

 apex is broken off. The crown has resembled that of a speci- 

 men figured by Geinitz in 1875 (Pal^ontogr., XX, pt. i, pi. 

 Ixv, fig. ^d). At the base of the crown, in front, the width 

 is 6.25 mm. At the base, the anterior face is somewhat con- 

 cave, but it soon becomes slightly convex. There are a few 

 short grooves at the base of the crown in front. The cutting 

 edges are very sharp. The posterior face is very convex, and 

 there are present numerous sharp costas of various lengths. 

 The lateral denticles are relatively large, close to 5 mm. high, 

 and are costate both in front and behind, although the an- 

 terior costse are feeble. 



The root is relatively large, and its branches make a very 

 acute angle with each other. The outer borders descend 

 from the lateral denticles so as to be nearly parallel with each 

 other. In this respect the root resembles that of Sauvage's 

 Odontaspis rochehrunei (Bull. Soc. geol. France [3], VIII, p. 

 437, pi. xiii, fig. 3). The tooth from Hakel differs from the 

 one just referred to in having a less slender crown and more 

 prominent lateral denticles. The length of one branch of the 

 root is 10 mm.; of the other, 12 mm. 



Collected at Hakel. 



