"Alexander Keyserling"@en . "1891Z"^^ . . . . "Alexander Friedrich Michael Lebrecht Nikolaus Arthur, Graf von Keyserling (August 15, 1815, Kabile Parish \u2013 May 8, 1891 Raikk\u00FCla Parish) was a Baltic German geologist and paleontologist."@en . . . . "Russian scientist" . "1815Z"^^ . "Keyserling, Alexander"@en . . . . . "1815-08-15Z"^^ . "1891-05-08Z"^^ .