What is the anatomical name of this design choice to have spikes

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Is there any evidence that there were feathers on triceratops' back? : r/Dinosaurs

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Medical illustration draws on knowledge of anatomy, cell biology

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Non-differentiable spiking neural networks. (a) Different from

Is there any known ceratopsian with only one horn? : r/Paleontology

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Therizinosaurus cheloniformis : r/Dinosaurs

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