Dürnten at the time of slate formation, Illustration of the flora and fauna at Dürnten at the time of the slate formation, to p. 512, Buri (sc.); Jeker (sc.), 1883, Oswald Heer: Die Urwelt der Schweiz. Zürich: Schulthess, 1883

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Dürnten at the time of slate formation, Illustration of the flora and fauna at Dürnten at the time of the slate formation, to p. 512, Buri (sc.); Jeker (sc.), 1883, Oswald Heer: Die Urwelt der Schweiz. Zürich: Schulthess, 1883

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Keywords: ., 512, 1883, buri, der, die, fauna, flora, formation, heer, illustration, jeker, oswald, sc., schulthess, schweiz, slate, time, urwelt, ürich, ürnten