El origen de las aves es uno de los temas mas fascinantes en ciencias evolutivas, aún hay incógnitas pero los fósiles y el ADN ya han brindado pistas respecto a este tema.
Fuentes:
A new time tree reveals Earth history's imprint on the evolution of modern birds https://pubmed.ncbi.nlm.nih.gov/26824065/
The evolutionary radiation of modern birds (Neornithes): Reconciling molecules, morphology and the fossil record https://www.semanticscholar.org/paper/The-evolutionary-radiation-of-modern-birds-and-the-Dyke-Tuinen/43078aca86aacc2d40651695019c813748c6ba94
Dating the diversification of the major lineages of Passeriformes (Aves) https://pubmed.ncbi.nlm.nih.gov/24422673/
Diversification of Neoaves: Integration of molecular sequence data and fossils https://pubmed.ncbi.nlm.nih.gov/17148284/
Early Evolution of Modern Birds Structured by Global Forest Collapse at the End-Cretaceous Mass Extinction https://www.sciencedirect.com/science/article/pii/S0960982218305347
A phylogenomic study of birds reveals their evolutionary history https://pubmed.ncbi.nlm.nih.gov/18583609/
Earth history and the passerine superradiation https://www.pnas.org/content/116/16/7916
Evolution of modern birds revealed by mitogenomics: Timing the radiation and origin of major orders https://pubmed.ncbi.nlm.nih.gov/21242529/
A comprehensive phylogeny of birds (Aves) using targeted next-generation DNA sequencing https://www.nature.com/articles/nature15697
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