Fossil Dinosaur Triceratops Frill best Edge piece Hell Creek Fm South Dakota COA 4599

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A Certificate of Authenticity from us at Pioneer Fossils will accompany this specimen.

Here is a nice piece of genuine frill bone from a Triceratops, from the late Cretaceous, as late as 66 million years ago, the end of the Reign of Dinosaurs. It has been positively identified as a Triceratops, as it was part of a dinosaur that was identifiable, but too heavily eroded to recover much of the skeleton.

This piece is from the edge of the Frill itself. You can see one very large blood groove on the outside part of the frill, where blood used to flow through to nourish the Frill. The inside shows marrow. The Frill was the gigantic bone at the back of the massive head of the Triceratops, best shaped a bit like a large shallow bowl. It was probably used for defense.

It measures about 3.0 inches at the longest measurement, and weighs 2.9 oz.

It is from the Hell Creek Formation near Newell, South Dakota.

Triceratops is one of the most famous of all dinosaurs, with its huge head, tough bony frill, and three sharp horns in the front. The movie, Jurassic Park, features a sick Triceratops that Ellie cared for.

The largest Triceratops grew to over 28 feet in length, and weighed up to 13 tons. It was, however, a plant-eater, with a beaked jaw and hundreds of teeth (up to 800) packed closely together for chewing the plants. There are two different Triceratops: horridus and prorsus. 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.

A very interesting and authentic fossilized piece of a famous species of dinosaur.

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We are happy to enclose a COA (Certificate of Authenticity). Some words of caution about COA's: Do not let them become a substitute for learning about the specimens. We have been working with fossils and minerals for many years, and we have seen hundreds of very nice-looking COA's, some that are wrong, mis-describing a specimen. In addition, the person selling the item is often the one who writes the COA (potential conflict of interest). Finally, a COA, without a photo of the exact specimen on the COA itself, is worthless, as it can later be placed next to any other fossil or mineral. We suggest that in addition to relying on a COA, that people read and study the subject.

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