Abstract
MR. A. J. LAVRUSHIN, a keen student of geology, who was my interpreter in Siberia, has sent me a careful drawing of a fossil insect which he received from a teacher in the Commercial School at Harbin. It was obtained near the coal mines at Soochan, in the Maritime Province of Siberia. The deposit is known to be Jurassic, probably middle or lower. Mr. Lavrushin says the rock is like that typical of the lower Jurassic. The figure appears to accord perfectly with the larva of the stone-fly Mesoleuctra gracilis Brauer, Redtenbacher, and Ganglbauer, known from the Jurassic (supposed middle Jurassic) at Ust Balei, west of Lake Baikal. It seems probable that we have another exposure of these insect-bearing beds, about 1500 miles from the original locality. This, if confirmed, may prove to be a matter of more than ordinary interest. For an account of the Ust Balei deposit and its significance see Bull. Amer. Museum Nat. History, 1924, p. 134.
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COCKERELL, T. A New Locality for Jurassic Insects. Nature 115, 947 (1925). https://doi.org/10.1038/115947c0
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DOI: https://doi.org/10.1038/115947c0
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