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Post by surroundx on Jun 12, 2018 12:01:37 GMT
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Post by Melanie on May 25, 2022 20:25:41 GMT
Beatrice Demarchi, Josefin Stiller, Alicia Grealy, Meagham Mackie, Yuan Deng, Tom Gilbert, Julia Clarke, Lucas J. Legendre, Rosa Boano, Thomas Sicheritz-Ponten, John Magee, Guojie Zhang, Michael Bunce, Matthew James Collins & Gifford Miller, 2022 Ancient proteins resolve controversy over the identity of Genyornis eggshellProceedings of the National Academy of Sciences of the United States of America: e2109326119. doi:10.1073/pnas.2109326119. PMID 35609205 Abstract: Ancient proteins resolve controversy over the identity of Genyornis eggshell - PubMed Significance The controversy over the taxonomic identity of the eggs exploited by Australia's first people around 50,000 y ago is resolved. The birds that laid these eggs are extinct, and distinguishing between two main candidates, a giant flightless "mihirung" Genyornis and a large megapode Progura, had proven impossible using morphological and geochemical methods. Ancient DNA sequencing remains inconclusive because of the age and burial temperature of the eggshell. In contrast, ancient protein sequences recovered from the eggshell enabled estimation of the evolutionary affinity between the egg and a range of extant taxa. The eggs are those of a Galloanseres (a group that includes extinct Dromornithidae, as well as extant landfowl and waterfowl), Genyornis, and not of the megapode (Megapodiidae, crown Galliformes). |
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Post by Melanie on Jul 4, 2024 19:10:46 GMT
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