MAMMALIAN REMAINS AT EPERNAY. 189 



this fluviatile deposit, which is so frequently inteipolated in 

 the lower eocene of England and France ; but the remark- 

 able fact connected with this locality, is the occurrence of 

 the remains of several terrestrial Mammalia, associated with 

 those of reptiles, fishes, and shells. They are confined to 

 the lower part of the stratum of coarse sand. No. 5' of the 

 foregoing section, and are very scarce; whilst remains of 

 Testacea and bones of the Trionyx and Emys are far from 

 uncommon. The sand of that part of the bed in which they 

 are imbedded is coarser than other parts of the stratum, and 

 contains occasional pebbles of quartz. It varies rapidly in 

 thickness, from 10 to 20 feet, and the organic remains are 

 limited to a very small vertical range. ^ For the determina- 

 tion of the bones of the following list, 1 am indebted to M. 

 Laurillard, of Paris. 



ORGANIC REMAINS OF STRATUM, No. 5. 



MOLLUSCA. 



Melania inquinata, De Fer. 

 Melanopsis buccinoidea, De Fer. 

 Paludina. 



CONCHIFERA. 



Anomia. 



Cyrena P antiqua. 



Teredina (personata P) Lam. 



Teredina. Two uew species. 



Anodonta. 



Several scales, and bones. 



PISHES. 



REPTILES. 



Crocodile ? 3 Several teeth. 

 Mososaurus P Part of a rib, and some teeth. 

 Numerous bones of the Trionyx and Emys. 

 Serpent. A vertebra. (See woodcut page 190.) 

 Lizard? Small species, a jaw-bone. 



^ The organic reliquice of the underlying strata, assimilate to those 

 usually found in the plastic clay, the detail of them would therefore pre- 

 sent nothing new. 



2 In its horizontal range, I have since traced this stratum along the 

 flanks of all the surrounding hills, especially at Cuys and Chavots, where 

 it abounds in large and well ^resevv edUniones, one species of which closely 

 resembles the Anodonta antiqua, figured by Charles D'Orbigny. 



3 M. Drouet has found bones of the crocodile in some of the underlying 

 beds also. 



