This Douvilleiceras Ammonite:
Weight - 12.7 ounces
Length - 3.5 inches
Width of body - 1.5 inches
Width at mouth - 1.75 inches
Douvilleiceras is a genus of ammonites from the Middle to Late Cretaceous. Its fossils have been found worldwide, in Africa, Asia, Europe, and North and South America. This Douvilleiceras Ammonia from the east African island nation of Madagascar is in superb condition with skilled handling bringing it to this point. The opalescent exterior is natural and is brought out through decisive polishing. Several areas are worn through to reveal oak leaf patterns of the sutures separating the chambers. It is uncommon for this to be available for sale. The name 'Tractor' is from its resemblance to heavy treads on the tires of farming equipment.
The agatized material has replaced the original flesh of this animal down to the molecular level with an outstanding result. This fossil is of high display quality for an office or show case in the home. It also makes a great gift. This ancient sea animal comes from Madagascar and dates from the Early Cretaceous period, Albian stage (~100 to 113 million years ago).
Without a doubt ammonites and nautiloids are favorite fossils. The opalescent layer is beautiful and polished. The sophistication of the form of these fossils is a good indication why they are younger and not 450 million years old. It took millions upon millions of years to evolve this sort of complexity in their chamber designs.