371 



Lias explored by liim in Somerset, could not, from the nature 

 of our sediments, be expected here. The Somersetshire beds 

 correspond physically in their rich yield of these pecuUar fossils, 

 to the deposits of May, Feuguerolles, and Fontaine Etoupe 

 Fours, situated to the south of Caen, and to their striking 

 and exceptional position palseontologically I have already alluded. 



V. LIST OF FOSSILS. 

 To render this account of the beds of the Spinatus Zone more 

 useful to the student of the liassic geology of our County, simple 

 tables of the chief fossils are supplied ; the two general lists are 

 as follows: — first, adopting by the way, the epithet of Prof. 

 Renevier, of Lausanne. 



TABLE I. CLASSICAL, OR LEADING FOSSILS 

 OF THE SPINATUS ZONE. 



Amaltheus spinatus 

 Harpoceras Normanianum 



It ^gion 



ff Zetes 



rr Thouarsense 

 Turbo paludinjeformis 

 Waklheimia resupinata 

 Waldheimia Marias 



Spiriferina rostrata 

 Apiocrinus amalthei 

 Belemnites breviformis 

 Protocardia troncata 

 Limea acuticosta 

 Lima Hermanni 

 Gresslya ovata 

 Inoceramus striatus 



TABLE II. THE MOST ABUNDANT FOSSILS 

 OF THE SPINATUS ZONE. 



Amaltheus spinatus, Brugiere 

 Harpoceras Normanianum 

 Lytoceras lineatum, Schlotheim 

 Bel. paxillosus 



ff breviformis 



a brevis 

 Turbo paludinaiformis 

 Ostrea cymbium 

 Protocardia truncata 

 Pholadomya obliquata 

 Avicula injequivalvis 

 Plicatula spinosa 

 Pecten aquivalvis 

 Harpax Parkinsoni 



Pecten priscus 



II acutiradiatus 

 ff acuticostatus 

 Lima densicosta 

 II Hermanni 

 Inoceramus substriatus 

 Terebratula punctata 

 Waldheimia resupinata 

 // indentata 

 // numismalis 



Rhyn. variabilia 

 n acuta 

 fi amalthei 



