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Here are 5 insects from the lower cretaceous; specimens 1 and 2 (pics 2a, 2b) from the Yixian Formation, Huangbangi Valley, Beipiao (~ Barremian) specimens 3, 4 and 5 from Nova Olinda, Crato Formation, Brasilia (upper Aptian / lower Albian) Length: specimen 1 = 10 mm (body length) specimen 2 = 8 mm (head to the end of the longest wing) (Diptera?) specimen 3 = 10 mm (body length, head - tail) specimen 4 = 21 mm (total length) (Orthoptera) specimen 5 = 18 mm (total length) (Beetle: Dystiscidae?) Any suggestions are appreciated! (specimen 4 is a grasshopper, specimen 5 a beetle; but is it possible to say more about them?) An additional question: The small circular fossils which look like small bivalves on the Yixian specimens are conchostracans (Nestoria pissovi), but I wonder about the brownish striations on the Nova Olinda material. They are suggestive of trace fossils, but otherwise they seem to show some organic matter similar to the body fossils.They are extremely common on the plates with Crato fossils. Does someone know what they are? Thank you very much! araucaria1959