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Symmetry of type D1 in the drawings on the back of a ray, at the aquarium of Genoa.
It seems the photo of a seashell, instead it’s a virtual image. Image used in the double...
Suggestions of symmetry in this matching of snails of the species Cepaea Nemoralis (the ph...
Iphiclides podalirius, a leptidopterus of the family of the Papilionidi, very common in It...
The Lumbricus terrestris, an anellid that lives in the soil. Earthworm activity is very im...
The drawing of this earwig puts in evidence a dihedral symmetry of type D1.
The drawing of a butterfly; the body is divided in head, thorax, abdomen. Wings and legs a...
