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obscurus

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199. The Thresher Shark (Carcharias vulpes).  200.  The Small Blue Shark (C. ceruleus).  201. The Dusky Shark (C. obscurus). 202. The Nurse (Scymnus brevipinna).

199. The Thresher Shark (Carcharias vulpes). 200. The Small Blue Sha...

Public domain scan of a technical diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.

297. The Large Shearwater, young (Puffinus obscurus). 298. Ditto, adult.

297. The Large Shearwater, young (Puffinus obscurus). 298. Ditto, adul...

Public domain scan of 19th-century zoological illustration, free to use, no copyright restrictions image

46. The Sea Swallow (Dactylopterus volitans). Scales and head of the same magnified. 47. The Smooth-browned Bullhead (Cottus mitchilli). 48. The Obscure Fresh-water Bass (Centrarchus obscurus).

46. The Sea Swallow (Dactylopterus volitans). Scales and head of the s...

Public domain scan of 19th-century zoological illustration, free to use, no copyright restrictions image

Anthus obscurus. Rock-Pipit.

Anthus obscurus. Rock-Pipit.

Public domain scan of print / book page depicting birds, ornithology, free to use, no copyright restrictions image - Picryl description