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Keywords from Image Description:
Origin of Vertebrates Fig . Fig The Digging Appendage or Ectognath of Limulus The Middle Protuberance of the Entocoxite opened to show the Generative and Hepatic Tissue gen within it One of the Prosomatic Locomotor Appendages or Endognaths of Limulus for comparison with fl flabellum cox coxopodite ent entocoxite mandible inner