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a true perch
Because they have apparently undergone little change
The skull is long with a narrow snout - much larger in relation to the length of the skull than in canine carnivores
Mammuthus primigenius) around 300
Mixopterus kiaeri, giant eurypterid (Replica) Stegosaurus a true perchFrom about 417 to 354 million years ago this massive trilobite predator lived in the brackish waters of the ancient seas of what we now call Norway. To date we know there have been at least 10,000 species of trilobites identified but as we know none of them were predators . Many a trilobite species fell prey to this Giant. Mixopterus, was a strange somewhat scorpion like animal. Very few specimens of this animal have been obtained, but this species is