﻿80 chimjEroidei. 



Edaphodon bucklandi, Agassiz. 



1843. Edaphodon bucklandi, L. Agassiz, Poiss. Foss. vol. iii. p. 351, 



pi. xl. d, figs. 1-4, 9-12, 19-24. 

 1843. Edaphodon eurygnathus, L. Agassiz, ibid. p. 352. [Palatine 



teeth ; British Museum.] 

 1850. Edaphodon eurygnathus, F. Dixon, Foss. Sussex, p. Ill, pi. x. 



figs. 18, 19, 22, pi. xii. fig. 5. 

 1885. Edaphodon bucklandi, F. Noetling, Abh. geol. Specialk. Preussen 



u. Thuring. Staaten, vol. vi. pt. 3, p. 3, pi. i. fig. 1. 



Type. Theoretically associated dentition of both jaws ; British 

 Museum (in part). 



The type species, of large size, the mandibular tooth sometimes 

 measuring 0*11 from the middle of the symphysial border to the 

 extremity of the post-oral margin. Mandibular tooth robust, with 

 a prominent beak, and the symphysial facette occupying more than 

 one third of the inner aspect ; beak-tritor mostly composed of 

 laminae, the other tritors consisting of numerous tubules ; median 

 tritor occupying more than two thirds of the inner oral surface, 

 with a narrow band separated from it immediately upon the posterior 

 border of the symphysis. Palatine tooth relatively broad, with 

 large tritors, the posterior inner one being the largest and broadest 

 and well separated from the outer tritor, which is much elongated 

 and expands anteriorly. Vomerine tooth very robust, with a broad 

 symphysial surface. 



The differences between the palatine and vomerine teeth of this 

 species and those of the so-called E. eurygnathus are solely due to 

 the imperfect state of preservation of the type specimens of the 

 latter. 



Form. Sf Log. Middle Eocene (Bagshot and Bracklesham Beds) : 

 Surrey and Sussex. Lower Eocene : Isle of Sheppey. Eocene 

 (Zone A x ) : Samland, Prussia. 



25700. Left mandibular tooth ; London Clay, Sheppey. 



Dixon Coll. 

 25719,25721. Two examples of the same tooth, one being more 



imperfect, the other nearly complete, but more slender; 



Bracklesham Beds, Bracklesham Bay, Sussex. Dixon Coll. 



P. 3074-5. Five mandibular teeth ; Bracklesham. EnnisMllen Coll . 



P. 5436. Left mandibular tooth ; Bracklesham. 



Presented by P. E. Coombe, Esq., 1888. 



38870. Bight palatine tooth, figured among the type specimens by 

 Agassiz, torn. cit. pi. xl. d. figs. 19-24 ; Bracklesham {not 

 Bagshot, as stated). Bowerbank Coll. 



