Here is a Douvilleiceras Tractor Ammonite with a Dark Shell. 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 and is in great. The shell is an opaque white with some lavender opalescence when held in the right light (shown in photos). The common name 'Tractor' is from its resemblance to heavy treads on the tires of farming equipment. This ammonite has a dark color to it and it possesses sharply defined ridges.
Approximate Dimensions for Douvilleiceras Tractor Ammonite Dark Shell:
Weight - 5.6 ounces
Length - 2.75 inches
Height of body - 2 inches
Width at mouth - 1.5 inches
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 iof this Douvilleiceras Tractor Ammonite Dark Shell s 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.