CRETACEOUS, 135-65 million BC, ammonite, aioloceras sp., 36mm dia., from Mitsinjo, Madagascar, beautiful opalized surface, $22.00 sold
 
 
 
 
 
 
 
 
 

LATE CRETACEOUS, c. 70 million BC, ammonite scaphite, undetermined species, from Fox Hills formation, South Dakota, nicely opalized:

 a) 28mm on matrix, $24.00 sold
 
 
 
 
 
 

30mm, $22.00 sold