Dioptase/Chrysocolla aa5806f779ab2fd578efaa6b959aa484 It had a large frill

It had a large frill of bone at the back of its skull and three large

this palm tree grows in the tropical mountains of South America

They survived long after many other large mammals in that time period by changing their diet

or culturing

making it the second hardest natural mineral

Dioptase/Chrysocolla aa5806f779ab2fd578efaa6b959aa484 It had a large frillDioptase crystals are emerald green and translucent. The mineral got its name from the Greek words for "to see" and "through" because of the ability to see internal cleavage planes of the small crystals. The mineral forms in rhombohedral crystals (usually less than 1cm in size) with a chemical composition of CuSiO3 (H2O). Theophrastus, the successor to Aristotle in ancient Greece was the first to use the Greek word Crysos " meaning gold" and kolla "