Transactions - American Philosophical Society . DroitTi hy THE HEAD OF A NEW FOSSIL ANIMAL. 477 surface of the dental bone for the accommodation of theinferior maxillary nerve; teeth very obtusely lanciform. Species 2. S. Leantis. Teeth acutely lanciform, muchsmaller than in the preceding species, slightly curved. Saurodon Leanus.—Plate XVI. Fig. 1.—Fragment of head, lateral view. a. Dental bone. b. Intermaxillarybone. c. Upper maxillary bone. g. Lachrymal bone. Fig. 2.—Head seen from above, b. b. Intermaxillary bones, e. Teeth of underjaw. /./.Nasal grooves. ^. ^. Lachrymal bones
Transactions - American Philosophical Society . DroitTi hy THE HEAD OF A NEW FOSSIL ANIMAL. 477 surface of the dental bone for the accommodation of theinferior maxillary nerve; teeth very obtusely lanciform. Species 2. S. Leantis. Teeth acutely lanciform, muchsmaller than in the preceding species, slightly curved. Saurodon Leanus.—Plate XVI. Fig. 1.—Fragment of head, lateral view. a. Dental bone. b. Intermaxillarybone. c. Upper maxillary bone. g. Lachrymal bone. Fig. 2.—Head seen from above, b. b. Intermaxillary bones, e. Teeth of underjaw. /./.Nasal grooves. ^. ^. Lachrymal bones. A. Small groove, i. An ar-ticulating surface, q. An articulating surface of upper maxillary bone. Fig. 3.—Posterior view. d. d. Glenoid cavities in coronoid bone. Fig. 4.—Anterior view. o. Foramina in dental bone for transmission of nervesand blood-vessels to the teeth. Fig. 5.—Portion of upper jaw, with the outer lamina of bone removed toshow the mode of dentition, magnified three times. New teeth, m. m. Oldteeth, p. Empty
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