DOUVILLEICERAS MAMMILATUM AMMONITES.

DOUVILLEICERAS MAMMILATUM AMMONITES FROM MADAGASCAR.  THESE AMMONITES HAVE BEEN COMPLETELY REPLACED WITH CALCITE!  A BEAUTIFUL AMBER COLOR.  YOU CAN STILL SEE THE SUTURE LINES AND THE SIPUNCLE IN THESE FANTASTIC REPLACEMENTS. UPPER CRETACEOUS, ARBIAN STAGE (112 MYA).  FROM AMBARIMANINGA, MAHAJANGA PROVINCE, MADAGASCAR.