The little penguin Public domain scan of zoological print or book illustration, zoology, free to use, no copyright restrictions image - Picryl description
Imitation of Wing Movement by a Reed with Flexible Sail moving on a Ball-and-Socket Joint, showing the Double Curves.
Swimming of the fish Public domain scan - Fish, 19th-century zoological illustration, print, free to use, no copyright restrictions image - Picryl description
Bird_wing_strokes Public domain scan of print / book page depicting birds, ornithology, free to use, no copyright restrictions image - Picryl description
Swimming of the sturgeon Public domain scan of zoological print or book illustration, zoology, free to use, no copyright restrictions image - Picryl description
Gulls flying Public domain scan - Bird, 19th-century zoological illustration print, free to use, no copyright restrictions image - Picryl description
Grey heron in full flight Public domain scan of zoological print or book illustration, zoology, free to use, no copyright restrictions image - Picryl description
Gull wing movements Public domain scan of 19th-century zoological illustration, free to use, no copyright restrictions image
Partridge wings in flight Public domain scan of zoological print or book illustration, zoology, free to use, no copyright restrictions image - Picryl description
Evolutionary zoology schematic Public domain scan of zoological print or book illustration, zoology, free to use, no copyright restrictions image - Picryl description
Schematic of evolutionary divergence between the young and the mature.
Cyclical reversion of evolutionary change Public domain scan of zoological print or book illustration, zoology, free to use, no copyright restrictions image - Picryl description
Emergence of evolutionary changes in an offspring
Magnified views of an adult and growing Sergestes Public domain scan of 19th-century zoological illustration, free to use, no copyright restrictions image
Sergestes larva Public domain scan of zoological print or book illustration, zoology, free to use, no copyright restrictions image - Picryl description
Lucifer larva Public domain scan of 19th-century zoological illustration, free to use, no copyright restrictions image