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a category of achondrite that formed through planetary differentiation processes
Some of the earliest and most important fossils were discovered along the coast of England in the early nineteenth century
most commonly hexagonal
including a massive asteroid impact that altered global climates and marine ecosystems
highlighting evolutionary trends in herbivorous dinosaur anatomy
13.2" Brittle Star Ophiura Sp Starfish Mortality Plate Fossil Ordovician Age COA & Stand Leptauchenia a category of achondrite thatLocation: Kataoua Formation, Blekus, Morocco Weight: 8 Pounds 9. 1 Ounces Dimension: 13. 2 Inches Long, 10. 5 Inches Wide, 1. 1 Inches Thick (Plate) Comes with a Certificate of Authenticity. Comes with a Free Stand. The item pictured is the one you will receive. Brittlestar Ophiura Sp This intriguing limestone slab was extracted from Middle Upper Ordovician (about 450 million years old) rocks in the Anti Atlas part of the Atlas Mountains of Morocco.