OF PETRIFACTIONS. 225 



Pectinites radiatus. Id. T. 32. F. 6. 



reticulatus. Id. T. 33. F. 1. 



longicolli. Id. T. 33. F. 9. 



anomalus. Id. T. 34. F. 13. 



gigas. Knorr. P. II. 1. T. B. F. 1. 2. Orten- 



berg. 



polonicus. Schlottheim. Wieliczka. 

 Chamites transversim punctatus. Volkra. Siles. subterr. 



T. 33. F. 7. 

 Ostracites labiatus. Knorr. P. II. 1. T. B. II. &** Fy. 2. 



Pirna. 



Anomites paradoxus. Scheuchz. F. 96. 

 Pinnites diluvianus. Knorr. P. II. 1. T. D. X. F, 1. 2. 



Pirna. 

 Gryphites rugosus. Knorr. P. II. 1. T. B. 1. d. F. 7. 



Wieliczka. 

 Muscuiites sablonatus. Bourg. T. 23. F. 142. 143. 



rugosus. Knorr. P. II. 1. T. B. vi. F. 3. 



Silesia. 

 Tellinites musculitiformis. Knorr, P. II. 1. T. B. II. 



St. Gallen. 

 raargaritaceus. Schlottheim. Mecklenburg. 



IV. Second Floztz Limestone, or Jura Limestone. 

 This formation, which rests on the rocks of the se- 

 cond sandstone formation, and is remarkable for the 

 abundance and variety of petrifactions it contains, in- 

 cludes beds of coal, marl, sand-stone, stink-stone, and 

 probably also of gypsum. The petrifactions occur prin- 

 cipally in the beds of marl, sand-stone and stink stone, 

 arid more sparingly in the other strata. 



The following are the genera of petrifactions that have 

 been met with in it : Serpulites, asterialites, encrinites, 

 echinites, orthoceratites, belemnites, ammonites, nauti- 



29 



