LAMjrlD^. 
401 
a single pair of broad acuminate lateral denticles, and one or two 
smaller outer x>air8 ; root short, the branches diverging at a very 
wide angle, and the nutritive foramen situated in a groove. 
The teeth named Galeocerdo tremauxi, Sauvage {^Lamna, p. 409), 
seem to approach this species most closely, but are distinguished by 
the relatively deeper root and the larger size of the lateral denticles. 
The so-called Otodus gerratus, Agassiz (Poiss. Foss. vol. iii. 1843, 
p. 272, pi. xsxii. figs. 27, 28), is founded upon teeth also very 
similar, hut differing in the irregularity of the lateral denticles ; 
these teeth probably pertaining to Odontaspis hronni. 
Form. 4' Loc- Banian : Mont Aimd, Marne, France. 
P. 5761. Two type specimens. Purchased, 1851. 
P. 5762. Twenty teeth, mostly imperfect. Purchased, 1851. 
1845. Otodus divergens, Sir Philip Egerton, Quart. Joum. Geol. Soc. 
vol. i. p. ICO, woodcut. 
Type. Detached tooth ; British Museum. 
Teeth of very small size, much compressed and elevated ; coronal 
surface smooth. A single pair of large sharply-pointed lateral 
denticles, somewhat divergent, with a minute outer pair. 
Form. 4' Loc. Upper Cretaceous : Madras, India. 
P. 593. Tj-pe specimen; Pondicherry. Eyerton Coll. 
1843. Otodus trigonaius, L. Agassiz, PoLss. Foss. vol. iii. p. 274, 
pi. xxxvi. figs. .35-37. 
Type. Imperfect teeth ; Munich Museum. 
Teeth small, broad, much compressed, with smooth coronal faces ; 
a single pair of large, broad, acuminate, lateral denticles. Root 
short and comparatively robust. 
Form. Loc. Upper Eocene (Ironstone) : Kressenberg, Bavaria *. 
1 Doubtful teeth from the Eocene of South Carolina are also assigned to 
this species by B. W. Gibbes, Joum. Acad. Nat. Sci. Philad. [2] vol. i. (1849) 
p. 200, pi. xivi. figs. 145, 146. ’ 
Lamna divergens (Egerton). 
Lamna trigonata (Agassiz). 
P. 1289. Two teeth. 
P. 5794. Hinder tooth. 
Egerton CoU. 
EnnislciUen Coll. 
2d 
