1.9" Fossil Paralenorthis Sp Brachiopod In Matrix Valongo Formation Arouca Portugal Insect an iron and magnesium-rich mineral

an iron and magnesium-rich mineral that imparts their characteristic dark coloration and substantial density

and minor metallic components are commonly present

The most supported theory about these crests is that they served as visual displays

These formidable creatures possessed complete dorsal and ventral carapaces composed of densely packed osteoderms—bony dermal plates structurally analogous to armadillo integument but achieving turtle-shell proportions

1.9" Fossil Paralenorthis Sp Brachiopod In Matrix Valongo Formation Arouca Portugal Insect an iron and magnesium-rich mineralLocation: Valongo Formation, Arouca, Portugal Weight: 10. 1 Ounces Dimensions: 4. 8 Inches Long, 4. 1 Inches wide, 0. 7 Inches Thick (Matrix) Dimensions: 1. 9 Inches Long, 1. 2 Inches wide The item pictured is the one you will receive. Middle Ordovician Age, 470 Million Years Old. Paralenorthis sp is a genus of brachiopods belonging to the class Rhynchonellata, which are characterized by their bivalve like shells and are primarily found in marine