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Dunkleosteus fossil

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Dunkleosteus is an extinct genus of arthrodire placoderm fish that existed during the Late Devonian period (about 358–382 million years ago) which is composed mostly of large, carnivorous fish compared to a shark in early evolution. The largest can grow up to 3-9 meters long and 3.6-4 tons in weight. Dunkleosteus had a two-part bony, armored exterior, which may have made it a relatively slow but powerful swimmer. Instead of teeth, Dunkleosteus possessed two pairs of sharp bony plates which formed a beak-like structure. The scientists said Dunkleosteus possessed a four-bar linkage mechanism for jaw opening that incorporated connections between the skull, the thoracic shield, the lower jaw, and the jaw muscles joined together by movable joints and producing high bite forces when closing the jaw and had a bite force of more than 8,000 pounds/square inch. This power compared to dinosaurs such as Tyrannosaurus rex and modern crocodiles.

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2 comments

The keel backward part can be added. If I found the true structure information
The eye's bones are now divided according to the fossilized form, I will add more details.
Thanks for your advice.

It's a rather nice model and very detailed. Though I noticed some small inaccuracies. There should be a keel projecting backwards on the inside of the dorsal plate. But it's missing in the model. This can be seen here:
https://www.fossilguy.com/gallery/vert/placoderm/dunkleosteus/dunk-dunkleosteus-cmnh.jpg
https://upload.wikimedia.org/wikipedia/commons/1/19/Dunkleosteus_juvenile_fossil_-_Cleveland_Museum_of_Natural_History_%2834421618320%29.jpg
And it also seems odd that the eyes are a full sphere instead of just the plates like the real fossils.
Would you consider updating this model?


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