OF PETRIFACTIONS. 229 



Musculites coraprimatus. Oryct. Nor. T. vii. F. 23. 



mytiloides. Oryct. Nor. iv. F. 2. 

 Pholadites caudatus. Halberstadt. 

 Mytilites sociatus. Thuringia. 



costatus. Lohberg, near Tonna. 

 Tellinites paganus. Oryct. Nor. T. vii. F. 26. 27. 

 comprimatus. Sachsenburg. 

 minutus. Schlottheim. Sachsenburg. 

 Balanites porosus. Blumenb. Abb. T. i. F. 1. Near 



Osnabruck. 



parasiticus. Lohberg. Tonna. 

 Trilobites cornigerus. Schlottheim. Near Reval. 



Fossil remains of fishes, and, it is said, also of birds, 

 have been found in this formation. 



VI. Chalk Formation. 



This, which is one of the newest of the floetz lime- 

 stones, contains many different petrifactions, as will ap- 

 pear from the following enumeration. 



Serpulites contortuplicatus. Mont. P. II. p. 25. Peters- 

 berg. 



peniformis. Schlottheim. Petersberg. 



exuviatus. Schlottheim. Island Rugen. 

 Osteriatites siderolites. Mont. P. 1. p. 150. Petersberg. 

 Asteriatites spinosus. Schlottheim. Petersberg. 



pentagonatus. Schlottheim. Petersberg. 

 Echinites poundianus. Schlottheim. Kent. 



varians. Bourg. T. li. F. 337339. 



anomalus. List. Anim. Angl. T. vii. F. 25. 



melitensis. List. Anim. Angl. T. xxvii. 



cordiformis. List. Anim. Angl. T. vii. F. 28, 



Breynianus. Breyn. Opusel. T. iv. F. 1.2. 



fenestratus. Knorr. T. E, 7. a. T. iii. 



