fridowelker.bsky.social
Interested in ancient proteins & Human Evolution | See @Welkergroup.bsky.social for a lot more fun! | #ERC_PROSPER | Globe Institute, University of Copenhagen | 🦷🦴💀
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Thanks Erin!
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Thanks Cedric!
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Thanks!!
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Thanks Clément!
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I am grateful to the many colleagues, both on here and elsewhere, who have contributed directly and indirectly to this study, as well as to our institute at the University of Copenhagen, which enables our palaeoproteomic explorations.
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This study would not have been possible without significant investments in ancient protein extraction and analysis methods. Amongst others, we are grateful to support from the MSCA and @erc.europa.eu, @leakeyfoundation.bsky.social.
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The information retrieved from these faunal analysis then allowed us to pick the most suitable approaches to study the Penghu mandible itself! Whenever we can, we should try and study proxies before attempting to analyse hominin fossils themselves.
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Prior to the analysis of the Penghu mandible, 13 extraction methods were tested on faunal material to determine their suitability to extract Pleistocene proteomes from bone, dentine, and dental enamel from Late Pleistocene fossils from the Penghu channel (see SI).
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As a hemimandible with various teeth, the morphology of the Penghu mandible together with the morphology of the previously described teeth from Denisova Cave and the mandible from Baishiya Karst Cave provides some further clarity on Denisovan mandibular morphology.
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The geographic distribution of these fossils and the environments with which they are associated indicates that Denisovans were able to adapt successfully to a wide variety of environmental and climatic conditions.
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Its revealing as a Denisovan provides fossil evidence that Denisovans ranged all the way to the eastern end of East Asia, far removed from the only two places from which Denisovan fossils with molecular evidence have been recovered before (Denisova Cave, Russia, and Baishiya Karst Cave, China).
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Ancient protein sequences recovered from this fossil reveal that it is a male Denisovan. We can determine it is a genetic male, because we retrieve peptides from both the X-chromosome variant and the Y-chromosome variant of the amelogenin proteins, indicating the individual was a genetic male.
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Ancient protein sequences recovered from this fossil reveal that it is a male Denisovan. We can determine it is a genetic male, because we retrieve peptides from both the X-chromosome variant and the Y-chromosome variant of the amelogenin proteins, indicating a genetic male attribution.