The new model from Schleich boasts multipart construction with an articulated lower jaw and detailed mouth inside and out. The armor is likewise done in great detail, complete with countless scratches from Dunk-to-Dunk combat, just as has been found on real armor. (The species had its cannibalistic side: it's not known whether there might have been dominance fights, but such fights are usually over mating rights, and the Dunk and its relatives were among the first fishes to develop in-person copulation rather than the "drop-eggs-and-spray semen" method.)
The model is studded head to toe with surface details: vertical winkles on the right side of the body and left side of the tail (the fish is shown with the body bending, and the wrinkles match up).
The model is big, over 22 cm long, and studded with either tiny bones (osteoderms) or scales all over. (The animal probably had neither, but it adds a great deal of texture and character to the model).
The amazing new Schleich Dunkleosteus
We don't know what the tail looked like, but the model-makers had to pick something, so they went with a tail with a large fin on the bottom. Likewise, we know it had to have pectoral fins, and these are large and well-detailed. We don't know if dorsal or caudal fins were large or small. And the line of scutes along the sides (meant to suggest a lateral line, perhaps? If so, they are really overdoing it) are an invention as far as we know.
So we don't how how accurately this model reflects the real animal, but the sculptors put great care into giving it this animal a "real" look and more detail than the vinyl Favorite Co. model or the smaller Wild Safari competitors. At $20, it's a little more more expensive than those, but completely worth it.
The smaller Wild Safari dunk (still cool)
(Thanks to Aurora Rayn for giving me the heads-up the moment this new model was posted for sale.)