Titlebook: New Trends in Geometric Analysis; Spanish Network of G Antonio Alarcón,Vicente Palmer,César Rosales Book 2023 The Editor(s) (if applicable)

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José Carlos Díaz-Ramos,Miguel Domínguez-Vázquez,Tomás Oteroain in their infancy. Even such basic questions as the monophyly of . (the largest genus) are unanswered. We define relationships based on comparative osteology, which allows us to incorporate well-preserved fossils into analyses. Acipenseriformes has existed at least since the Lower Jurassic (appro

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Vicent Gimeno,Ana Hurtadoeir basal position within Actinopterygii, rigorous comparative morphological studies of acipenserids have never been made, and most ideas about acipenserid evolution hinge on an untested impression that shovelnose sturgeons (Scaphirhynchini) are phylogenetically primitive. This impression promoted i

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