Lambeosaurus Rib Bone Cross Section- Judith River Formation | River Walker Minerals Crystal richly colored amethyst

richly colored amethyst

A larger partially exposed tourmaline near the center draws the eye

The sparkling druzy coating gives the entire piece a soft

The sphalerite itself is covered in brilliant

Lambeosaurus Rib Bone Cross Section- Judith River Formation | River Walker Minerals Crystal richly colored amethystLocale: Judith River Formation, Montana, USA Age: Late Cretaceous (~75 million years old) Dimensions: 45g 2 x 1. 2 x 0. 7 inches This specimen is a section of rib bone attributed to the Lambeosaurus, a duck billed dinosaur that lived during the Late Cretaceous. The cut surface beautifully reveals the internal structure of the bone, showing the natural network of chambers and trabeculae that once helped support these massive animals while keeping their