8 
TERTIARY VERTEBRA TA OF THE FAYtM. 
to llic loss of i]i(i j)ostcrior poriioii, tlio iiiiicr ■wall of tlie dental canal lias been crushed 
in, .and tlio anteiaor alveolus is incomplete. The syinphvsial surface (.vym.) extends 
back as far as tbe hinder bordei' of pm. 2. The sinole alveoli of the incisors, the canine, 
and the first premolar are enijity; they are separated from one another and from jo/n. 2 
by almost, ecjual intervals of about 2'4 cm. P)ii. 2 is a two-roofed tooth, compressed 
and sharp-ed^^ed, with two accessory dentiejes on its posterior border ; y;/«. 3 is 
lepresenfed by its two alveoli only ; 4 is ,a large two-rooted tooth apparently 
having thrt'e accessory dcmficles on both its anterior and jiosterior borders. The molars 
aie sjualh'r te(4h closely crowded together. In all, the anterior liorder is nearly 
veifical and without denticulations, while the posterior border has two or perhaps three 
accessory denticles in m, 1 and m. 2, and at least three in m. 3. The crowns of all the 
Ijeft ramus of mandible of ZciigJoJon osiris: A, from outer side ; B, from above. 
.alveolus of canine ; i 1-3, alveoli of tbe incisors ; m. 1-3, molars ; yaa. 1-4, premolars or their alveoli ; 
sjim., symphysis. | nat. size. 
teeth are somewhat obscured by a coating of gypsum. There are depressions for the 
reception of the points of the ujiper teeth behind and rather to the outer .side of the 
alveoli of /. 3, c., ywi. 1, and almost immediately behind the alveoli of yon. 2 and pm. 3. 
The dimensions (in centimetres) of this spc'cimen are givim bedow' ; those of the 
sjiecimens described by Dames and Stronu rare [ilaced in the second and third columns 
for compaiison : — 
Length from anterior end of jaw to anterior border of pm. 2 . 
,, „ border of y»n. 2 to binder border of ai. 3 
Height of jaw beneath L 2 
„ „ 2 
„ 
Lengtli of the sympbysial surface 
24 
Dinncs’s l_V|)e 
apcciiiu'ii. 
22 ap[). 
Slromor's 
apcciuien. 
2') 
21 -5 
21 
23-0 
3-3 
3 
3-8 
O-T 
■1-.5 
.3-8 
1 1 ^f'P- 
D.) 
1 1 -o 
28 
, , 
