Cleoniceras besairei
Geologic Time: Middle Cretaceous, Albian Stage
Size (25.4 mm = 1 inch): 190 mm diameter (each)
Fossil Site: Tulear, Madagascar
Fossil Code: MA047
Price: Sold
 Description:
The fossil show in Tucson is the first place that many unusual
and novel fossil specimens come to light, and this spectacular
ammonite and a few others like it I was able to secure are a
case in point. A spectacular ammonite is a Cleoniceras besairei
from Madagascar which has been split in half and polished to
show the wonderful detail within. Some of the individual chambers
are open and filled with rich black colored Calcite crystals,
with the septa (divisions) between each chamber preserved as
white Calcite, making for a superb display piece with a striking
geode-like appearance. The rich color is most likely a result
of infusion of the deposit with Manganese, affording the unusual
black and deep brown specimens you see here. This is a fine example
of an ammonite from the Albian (112 m.y.a) deposits of Madagascar,
one that is sure to be a fine addition to any ammonite collection. |
