176 



and spines of Ecliinidae, fragments of shells, and other triturated 

 organic remains. The most abundant fossils are the following: — 



Cephalopoda. 



Belemnites giganteus, Schloth. Ammonites interruptus, Bmg. 



" unicanaliculatus, ZTarfm. " Martinsii, d'Or&. 



Nautilus lineatus, Smu. " Humphriesianus, Sow. 



Ammonites Truellei, d'Orb. " Garantianus, d'Orh. 



niortensis, d'Orb. » Ebrayi, Fer. 



CONCHIPERA. 



Panopsea Jurassi, d'Orb. Mytilus reniformis, d'Orb. 



Pholadomya fidicula, Soiv, Avicula digitata, Desl. 



Ceromya abducta, d' Orb. Hinnites tuLerculosus, d' Orb. 



Pinna ampla, Soiv. Ostrea acuminata, Soiv. 



Beachiopoda. 



Ehynchonella pKcatella, Sow. Ehynchonella angulata, Smv. 



II quadriplicata, d'Orb. Terebratula emarginata, Soiv. 



II Garantiana, d'Orb. « carinata, Lamk. 



II pbaseolina, Desl. " Pbillipsii, Mor. 



POLYZOA. 



Berenicia diluviana, Lamx. Proboscina Jacquoti, Haime. 



II Archiaci, Haime. 



EOHINODEEMATA. 



Rabdocidaris crassissima, Cott. Acrosalenia aqualis, Cotf. 



Pseudodiadema depressum, Desor. 



Spongia. 



Lymnoreotbeles mamillata, d' Orb. 



Caleaires a Collyrites ringens. — This is in reality a continuation 

 of the preceding, although separated from it by some sterile 

 beds. Its mineralogical facies is however different, for it is 

 charged with ferruginous Oolites similar to those of Bayeux, 

 and is hkewise very fossiliferous. It is the highest bed of the 

 Inferior Oohte series, and is capped by a small bank pierced 

 by lithophagous moUusca. The fossils collected from the 

 ferrusrinous Oolite are : — 



