4.7" Rough Green Prehnite Crystal Mineral Specimen Location Imilchil, Morocco Starfish Remains of partial Poebrotherium carcasses

Remains of partial Poebrotherium carcasses have been found fossilized

They first emerged in Earth’s oceans around 521 million years ago during the Early Cambrian period

but are especially well-known from Europe and North America

These marine reptiles were highly efficient swimmers

4.7" Rough Green Prehnite Crystal Mineral Specimen Location Imilchil, Morocco Starfish Remains of partial Poebrotherium carcassesLocation: Imilchil, Morocco Weight: 1 Pound 10. 4 Ounces Dimensions: 4. 7 Inches Long, 3. 4 Inches Wide, 2. 3 Inches Thick The item pictured is the one you will receive. Prehnite is a translucent to transparent pale green mineral of the phyllosilicate group, first described in 1788 and named after Dutch military officer Colonel Hendrik von Prehn. Frequently found in association with calcite and epidote, prehnite is most commonly encountered in