APPENDIX. 



87 



Ostrea Virginiana, Gmel. 



Bulla acuminata, Sow. 

 * Venus rustica 1 Sow. 

 f Pectunculus subovatus, Say. 

 $ Panopaea Faujasii. 



EOCENE, OR LONDON CLAY. 



Corbis lamellosa, Lam. 



Cardita planicosta, Blain. 



Bulimus terebellatus, Lam. 

 § Solarium patulum, Lam, 

 || Solarium canaliculatum, Lam. 



Fistulana elongata, Desh. 



CRETACEOUS GROUP. 



Pecten quinquecostatus. 

 Although the preceding list embraces all that can at present be positively identi- 

 fied as common to the strata of Europe and America, there can be no question that 

 further observation will detect many others, not only in the tertiary beds, but also 

 in the cretaceous series.^ 



No. IV. 



Table, shewing the Organic Remains common to the older and newer Cretaceous 

 strata, and to the latter and the Eocene, (London clay,) in the United States : 



Formations. 



Kange of Species. 



rPlagiostoma dumosum, 

 Eocene, or London N Ostrea stllaefornus, 

 clay. "S Pecten calvatus, 



(^Scutella Lyelli. 



Newer cretaceous 

 strata. 



Plagiostoma dumosum, 

 Ostrea sellaef ormis, 

 Pecten calvatus, 

 Gryphaea vomer, 

 Ostrea cretacea, 

 Ostrea panda, 

 _Scutella Lyelli. 



OlderCretaceous strataCg^ea vomer, 

 or Ferruginous sand.£ f st 



. Ostrea panda. 



* Isocardia fraterna, Say. t P. variabilis, Sowerby. $ P. reflexa, Say. 



$ S. scrobiculatum, Conrad. || S. ornatum, Lea. 



1 The geological analogies between America and Europe are conspicuous in all the forma- 

 tions. Vide Prof, Buckiand's note in the American Journal of Science, vol. iv, p. 186. See 

 also the very interesting observations contained in chap. I. of Mr. Maclure's Geology of the 

 United States. 



