MAMMALIAN REMAINS AT EPERNAY. 191 



White chalk, in which were found, amongst other more ordinary fos- 

 sils, an indeterminable species of Cerithium, fragments of fishes, 

 part of the jaw with teeth and other hones of a large saurian, analo- 

 gous to that of Maestricht, and remains of a turtle, ahout 16 inches 

 long. 



The yellow chalk contains the following fossils : — 



CONCHIFERA. 



Cardium Hillanum. Catillus Cuvieri, A. Brong. 



Arca. Inoceramus Lamarckii. 



Lima. Terebratula carnea, Sow. 



Pecten quinque-costatus, Sow. octoplicata, Sow. 



Pectunculus. plicatilis, Sow. 



NUCULA. 



MOLLUSCA. 



Trochus Basteroti, A. Brong. Pleurotomaria, or Solarium. 



Turritella. Belemnites mucronatus, Schlot. 



" MM. Elie de Beaumont and D'Archiac were the first to 

 announce to the Geological Society of France, the existence 

 of a marine calcareous stratum between the plastic clay and 

 the chalk of Meudon, to which a careful examination now 

 enables me [C. D'Orbigny], to add several new details." (See 

 section, p. 190), 



This calcaire grossier is whitish or yellowish, and gene- 

 rally slightly coherent, frequently encloses numerous frag- 

 ments of Polyparia and Radiaria, and is characterised in 

 many places by the presence of numerous pisolitic grains. 



This series contains the following fossils, some of which 

 had been previously determined by M. D'Archiac. 



ZOOPHYTA. 



0RBiT0LiTEsj9/awa. Characteristic T vrbj-soli a elliptica, A. Br. 

 of the central division of the cal- Flustra. 

 caire grossier. Eschara. 



RADIARIA. 



Spatangus. Of the same species as Cidaris (Spines of the) 

 the one found on the calcaire gros- Asteria (Articulations of) 

 sier of Grignon. 



ANNULATA. 



Dentalium. Serpula. 



conchifera. 



Crass A TELL A tumida, variety B., Cyther^a obliqua, Desh. 



Lamk. Venus o6%Ma, Lamk., and another 



Cordis lamellosa, Lamk. indeterminable species. 



LuciNA grata^ Def. Corbula gallica, Lamk. 



LuciNA contorta, Def. Venericardia. 



