414 



STRATIGKAPHICAL GEOLOGY 



Brachwpoda. Terebratula intermedia, T. Bentleyi, Waldheimia 

 obovata. 



Lamellibranchia. Pseudomonotis echiuata, Pecten vagans, Lima dupli- 

 cata, Pleuromya decurtata, Gresslya peregrina, 

 Pholadomya lyrata, Ostrea flabelloides. 



Gastropoda. Pseudomelania vittata. 



Cephalopoda. Clydoniceras discus, Macrocephalites macrocephalus. 



Fig. 136. RESTORED SKELETON OF MEC.ALOSAURUS BUCKLANDI (,"),). 



Actual length supposed to be about 30 feet. 



Terrestrial and Freshwater Fauna. The estuarine beds 

 which occur occasionally in these rocks furnish us with some 

 interesting remains of the plants and land animals. The borders 



Pig. 137. JAWS OF (1) PHASCOLOTHERIUM BUCKLANDI AND (2) AMPHITHERIUM 

 BRODERIPI, FROM STONESFIELD. 



Natural size, with enlarged views of teeth above. 



of the rivers and estuaries must have been clothed with a dense 

 vegetation, ferns of the genera Matonidium, Laccopteris, Coniopteris, 

 Cladophlsbis, Todites, Sphenopteris, Tceniopteris ; cycads of many 

 genera, Williamsonia, Ctenis, Nilssonia, Anomozamites, Otozamites, 

 etc. ; coniferous trees, such as Araucarites, Brachyphyllum, Baiera, 



