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209. The American Hound-fish (Mustelus canis). 209 a. Under side of th...
Public domain scan of a technical diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.
Petromizon marinus, The Lamprey.
Public domain scan of 18th-century print, free to use, no copyright restrictions image - Picryl description
247. Bluish Sea Lamprey (Petromyzon nigricana). 248. Colored Mud Lampr...
Public domain scan of 19th-century zoological illustration, free to use, no copyright restrictions image
215. The Prickly Ray, male, (Raia americana). 216. The American Sea La...
Public domain scan of 19th-century zoological illustration, free to use, no copyright restrictions image