Friedrich Christian Lesser (12 May 1692 – 17 September 1754) was a German Protestant pastor, naturalist and antiquarian who promoted natural theology through the study of insects, minerals, and plants which he formulated in his books ''Insecto-theologia'' (1738), ''Testaceo-theologia'' (1744) and ''Litho-theologie'' (1735). He lived in Nordhausen and also wrote a history of the city.
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