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This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
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Dermal spine (USNM 328554) of ''Ctenacanthus'' sp. on display at the
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I, the copyright holder of this work, hereby publish it under the following license:
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sp. on display at the
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
