Canadian amber in a broader context: why is Canadian amber important?
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In the context of other Cretaceous ambers
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Mosses and lichen in Grassy Lake Amber
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Botanical affinities: plant inclusions
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Botanical affinities: infrared spectra (FTIR)
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Fingerprinting Grassy Lake amber
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Insect biodiversity
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Parasitoid wasps (microhymenopterans)
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Serphites pygmaeus McKellar & Engel, 2011
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Formicidae: Haidoterminus cippus (nomen nudum)
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Insect conclusions
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Mating congregations
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Compression fossils of Sinornithosaurus plumage
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Preservation and melanosomes in compression fossils
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A feather evo-devo primer ...
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The Canadian amber dichotomy
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Stages I and II barbules: non-avian
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Stage IV barbs and barbules: avialan
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Stage IV, specializations for water uptake
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Stage V, and specializations for flight
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Pigmentation
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Plumage conclusions
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Coal-associated ambers
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The quest for Paleocene amber
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Synchrotron X-ray microtomography
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General conclusions
Description:
Explore the fascinating world of Canadian amber in this Royal Tyrrell Museum Speaker Series talk by Ryan McKellar from the University of Alberta. Delve into the nature of amber formation, its geological origins, and its significance in preserving Late Cretaceous flora and fauna. Discover the unique characteristics of Cedar Lake and Grassy Lake amber, and learn about their importance in the broader context of Cretaceous amber deposits worldwide. Examine the diverse insect biodiversity trapped within these ancient resins, including parasitoid wasps and early ant species. Investigate the groundbreaking findings of preserved feathers in amber, providing insights into the evolution of plumage from non-avian dinosaurs to early birds. Gain an understanding of advanced techniques like infrared spectroscopy and synchrotron X-ray microtomography used in amber research. Uncover the ongoing quest for Paleocene amber and the potential for future discoveries in this captivating field of paleontology.
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Canadian Amber: A Snapshot of a Late Cretaceous Forest and Its Inhabitants