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Frontiers in Ecology and Evolution did a focused and succinct review looking at 'the Tree of Life' in 2017 here. They particularly highlight the importance of integrating a fossil record within molecular trees. The upshot is simply that increasingly tighter integration between palaeontology and molecular dating is the ongoing research frontier. The best ...


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I want to map NCBI taxID to their evolution time. Do we have a database for such correlation? It would be best to edit your question to clarify what you mean by "evolution time" since this is not a well-defined term in molecular evolution. Even so, I think we can provide a clear answer to this question. Estimating branch lengths between divergent ...


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Good answer. The common ancestor is not known due to the paucity of the fossil record at this point in evolutionary time. A reconstruction can be made using coalescent theory which is what @MaximillanPress describes. The level of uncertainty at that depth of calculation requires significant expertise. I would re-evaluate the comparison with related organisms ...


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Because I've now posted several comments, I'll just roll them all up. For background on the approaches used to identify most recent common ancestors and a high-level look at how animal taxonomy has been inferred, I suggest Lynch 1999. I think that there are 2 interpretations of this question. If you are interested in just looking up a single MRCA of well-...


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