Jura, Petrification from the Jurassic, pl. XI, according to p. 713, 1883, Oswald Heer: Die Urwelt der Schweiz. Zürich: Schulthess, 1883

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Keywords: ., 713, 1883, der, die, heer, jura, jurassic, oswald, petrification, pl., schulthess, schweiz, urwelt, xi, ürich