Birds are the only dinosaur lineage that survived until today. About 66 million years ago at the Cretaceous–Paleogene (K–Pg) boundary, a mass extinction event destroyed all non-avian dinosaurs, ...

In phylogenetic analysis, branching diagrams are made to represent the evolutionary history or relationship between different species, organisms, or characteristics of an organism (genes, proteins, ...

what is the grand arrangement of the tree of life in terms of kingdoms and phyla? That is, we will move across the entire spectrum from individual identification to higher level systematics. Largely ...