Crotalocephalus Trilobite in Matrix Ammonite Fossils and Chambered Nautilus a calcium magnesium silicate and

a calcium magnesium silicate and Jadeite

The function of this array of plates and spikes has been the subject of much speculation among scientists

Emeralds receive their beautiful green coloration from trace amounts of Chromium

specimens such as this are highly collectable

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Crotalocephalus Trilobite in Matrix Ammonite Fossils and Chambered Nautilus a calcium magnesium silicate andTrilobites are extinct hard shelled marine arthropods with amazingly great diversity. It is estimated there were over 15,000 known species of Trilobite, making them the most diverse animal life form that ever existed on earth. In Morocco, new Trilobite specimens are being discovered every year. Trilobites are important as paleo zoic guide fossils, having existed for over 270 million years. They began their existence during the early Cambrian time