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Resultados da Busca
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2010
Journal article
Use of fine-scale stratigraphy and chemostratigraphy to evaluate conditions of deposition and preservation of a Triassic lagerstätte, south-central Virginia
The rich, fossiliferous Triassic sediments exposed in the Virginia Solite Quarry include a 34-mm-thick “insect layer” that is notable for detailed preservation of soft-bodied invertebrate and vertebrate remains. We describe this unique Konservat-Lagerstätte and use sedimentologic and geochemical analyses to interpret the environmental conditions necessary to preserve such delicate fossils....Fraser, Nicholas C ; Liutkus, C M ; Beard, J S ; Ragland, P C
North America, Lacustrine, Newark Supergroup, Danville-Dan River Basin, rift basin, and insects
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2013
Journal article
A Triassic seed with an angiosperm-like wind dispersal mechanism
The earliest record of a seed with a pappus-like, parachute seed dispersal mechanism, Edenia villisperma gen. et sp. nov., is described from the Upper Triassic of the eastern United States. The seed is small and roughly triangular. Clusters of long hairs emerge from a whorl of at least five circular...Axsmith, Brian J ; Fraser, Nicholas C ; Corso, Taryn
Newark Supergroup, seed, wind dispersal, angiosperm, and Triassic