Karl Ernst von Baer (1792 – 1876) was a Baltic German scientist and explorer. Baer was a naturalist, biologist, geologist, meteorologist, geographer, and is considered a, or the, founding father of embryology. He was a member of the Russian Academy of Sciences, a co-founder of the Russian Geographical Society, and the first president of the Russian Entomological Society, making him one of the most distinguished Baltic German scientists.
To commemorate the 150th anniversary of Estonian Naturalist's Society, Estonia issued in 2003 a postal stationary postcard with printed stamp shows von Bear. the cachet shows turtle and Ammonite fossils.
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The printed stamp on the postal stationary.
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The back of the postcard shows different silhouette of creatures among them fossils of trilobite, ammonite and shell. I had to scan it is high contrast in order to get visible scan.
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