﻿GEOLOGICAL MEMOIRS. 



Table I. — The White 



Franconia. 



Limestones 

 Diceras. 



Mytilus am- 



plus. 

 Ter. mcon- 



Corals. 



( Uolitliun.) 



Fish. 

 Crustacea. 



Sepia;. 

 Ammonites 

 withAptychus. 



(Solenhofen.) 



Dolomite and Marble. 



Terebratula lacunosa. Scy. 

 phiee, Pentacr. cingulatus 



Laminated Limestones, 

 with Am. planulati. 



Solenliofen Schists or 

 Crabs-claw Beds. 

 Aptychus. Tereb. pentago- 

 nalis. 



Blue Clays. 



Nattheim Coral Schist. 

 Anthopli. obconicum. Lithod 

 trichotomum. Astraea 

 Apiocrinites Milleri. Cida- 

 rites coronatus. Nerinaea 

 depressa. 



Massive Rocks. 

 Tereb. insignis. 



Marble. Dolomite. 

 Saccharoid Limestone. 

 Caverns. 



Spongites Bed. 

 Tereb. lacunosa, &c. 

 m. alternans, polyplocus. 

 Eugeniacrinites. Pentacr. 

 cingulatus. Scyphiaj. 



Clays and Calcareous 



Beds. 

 A. polygyratus, flexuosus. 



Clays, 

 with Terebratula impressa. 



Switzerland and the Jura, 



seoeoiiuaii. 



Portlandiau Group. 

 Limestone and marls, 

 iogyra virgula. _ Nerin 



Kimmeridgian Group. 

 Limestone and mails. 



Pholadomya Protei. Mya. 

 Perna plana. Trigonia pli- 



Sequanian Group. 



Limestone and marls. 

 Astarte minima. Apiocr 

 Meriani. Natica. Hostel 

 laria. Ostrea Bruntrutana 

 et sequana, Tlmrm. 



Corallian Group. 

 Nerinsca Bruntrutana. Cidarii 

 coronata. Apiocrinus Mil- 

 leri. Astrsea. Antho- 

 phyllum. Lithodendron 



Facies a chaille. 



Argovian Group. 

 Spongites. Tereb. impressa. 



FRAAS ON THE JURA FORMATION. 



79 



Burgundy. 



Normandy. 



South-England. North-England 



Greensand. 



Honfleur Clays 



Hastings Sand. 

 (Purbeck Stone.) 



Portland Stone. 

 A. biplex. Buccinum 

 naticoides. Terebra 

 Portlandica. Trigo- 

 nia incurva. Perna 



Kimmeridge Clay 

 Ostrea deltoidea. 

 Plants. 



Greensand. 



Kimmeridge Clay. 

 Plants. 



Oolite. 

 Turbinolia. Caryo- 



Coral Rag. 



