File:Waptia fieldensis Walcott, a mandibulate arthropod from the middle Cambrian Burgess Shale.pdf
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Waptia_fieldensis_Walcott,_a_mandibulate_arthropod_from_the_middle_Cambrian_Burgess_Shale.pdf (0 × 0 pixels, file size: 11.42 MB, MIME type: application/pdf)