ermian - t riassic boundary in the v olga Basin, european russia
TL;DRAbstract
Arthropod traces are found on fossil leaves from the recently discovered in the Volga River Basin trans-boundary endPermian – earliest Triassic sequence at the base of the Vetlugian Series conformable on the Vyatkian Horizon of the Tatarian Stage. The flora of this interval consists principally of Permian survivors with a few derived forms of peculiar leaf morphology, assigned to the Peltaspermales. A variety of arthropod feeding marks is found on one of such forms, Vjaznikopteris rigida Naug. The most remarkable among them are the histoid galls of mites, as well as the curvilinear mine, apparently the geologically oldest hitherto known. The mine track is associated with U-shaped incisions, presumably for cocoon case construction. This association contributes to our knowledge of plant – insect interaction during critical periods of geological history.
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Arthropod traces are found on fossil leaves from the recently discovered in the Volga River Basin trans-boundary endPermian – earliest Triassic sequence at the base of the Vetlugian Series conformable on the Vyatkian Horizon of the Tatarian Stage. The flora of this interval consists principally of Permian survivors with a few derived forms of peculiar leaf morphology, assigned to the Peltaspermales. A variety of arthropod feeding marks is found on one of such forms, Vjaznikopteris rigida Naug. The most remarkable among them are the histoid galls of mites, as well as the curvilinear mine, apparently the geologically oldest hitherto known. The mine track is associated with U-shaped incisions, presumably for cocoon case construction. This association contributes to our knowledge of plant – insect interaction during critical periods of geological history.
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