The horridus are always found in ground below the prorsus, so they are older. The horridus have a smaller nose horn and larger beak than the prorsus. It is from Hell Creek Formation near Newell, South Dakota.
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Late Cretaceous Period (65 Million Years Old). Hell Creek Formation, South Dakota. Nice Piece. High quality bone.
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Late Cretaceous Period (65 Million Years Old). Hell Creek Formation, South Dakota.
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The horridus are always found in ground below the prorsus, so they are older. The horridus have a smaller nose horn and larger beak than the prorsus. It weighs about 9.75 oz. It is from Hell Creek Formation near Newell, South Dakota.
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Natural triceratops (horned dinosaur) frill bone piece from South Dakota approx. 67 million years old. Very cool you can see the details in picture. If you have questions please ask. Combined shipping offered.
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Squamosal was the area from the upper horns to the lower horn and tends to have a smoother texture. A nice addition to anyone's dinosaur bone collection at a great price.
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