Dunkleosteus - Skull Fossil Fragment dendrite They appear in the fossil

They appear in the fossil record 68 million years ago

Once thought to have been more widely dispersed

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which would have come from the back of the bear's jaws

Each filament is embedded in a high-purity oxygen-free copper matrix for stability and current sharing

Dunkleosteus - Skull Fossil Fragment dendrite They appear in the fossilFirst discovered embedded in the Cleveland Shale of Ohio, the Dunkleosteus is a fossil that still looks as terrifying as it did in life over 350 million years ago. The fish was adorned with tough plate armor and equipped with bony blades for shredding its prey to pieces. Even now, this skeletal armor is quite the sight. This specimen is a piece of a 358,000,000 year old Dunkleosteus fossil skull from Morocco's Famennian strata. First appearing in the