Observed:
- Capreolus capreolus
- Castor fiber
- Sciurus vulgaris
- Delichon urbicum
- Bufo bufo
- Leucanthemum vulgare Lam.
And the man himself:
Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné, was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the “father of modern taxonomy”.
Ref.: wikipedia.com
Please see: Linné.