170 



UNGULATA. 



Family TYPOTHERIID^E. 



Genus TYPOTHERIUM, Bravard l . 



Syn. Mesotherium, Serres 2 . 



Dentition : — I. ^ C. g, Pm. 2 -, M. ^. The incisors grow from per- 

 sistent pulps ; and the structure of the cheek-teeth recalls that of 



Pig. 22. 



Typotherium cristatum. — Cranium and mandible ; from the Pleistocene 

 of South America. ■§•, 



Toccodon. The skull is ungulate; there is a third trochanter to 

 the femur, and clavicles are present ; the astragalus has a distal 

 ball-like articular condyle. A figure of the skull is given in the 

 accompanying woodcut. 



1 Comptes Rendus, vol. xliv. p. 961 (1857). Quoted by Serres. 



2 Ibid. vol. xliv. p. 961 (1857). 



